diff --git a/notebooks/tsp.ipynb b/notebooks/tsp.ipynb
index 112b284..9035578 100644
--- a/notebooks/tsp.ipynb
+++ b/notebooks/tsp.ipynb
@@ -199,21 +199,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 1,
+   "execution_count": null,
    "id": "a50706bc",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "sort_neighbors (generic function with 1 method)"
-      ]
-     },
-     "execution_count": 1,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "function sort_neighbors(C)\n",
     "    n = size(C,1)\n",
@@ -236,25 +225,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 2,
+   "execution_count": null,
    "id": "6dd0288e",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "4-element Vector{Vector{Tuple{Int64, Int64}}}:\n",
-       " [(1, 0), (2, 2), (4, 2), (3, 3)]\n",
-       " [(2, 0), (4, 1), (1, 2), (3, 4)]\n",
-       " [(3, 0), (1, 3), (4, 3), (2, 4)]\n",
-       " [(4, 0), (2, 1), (1, 2), (3, 3)]"
-      ]
-     },
-     "execution_count": 2,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "C = [\n",
     "    0 2 3 2\n",
@@ -275,27 +249,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 3,
+   "execution_count": null,
    "id": "00608e1d",
    "metadata": {
     "scrolled": true
    },
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "4-element Vector{Tuple{Int64, Int64}}:\n",
-       " (3, 0)\n",
-       " (1, 3)\n",
-       " (4, 3)\n",
-       " (2, 4)"
-      ]
-     },
-     "execution_count": 3,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "city = 3\n",
     "C_sorted[city]"
@@ -342,21 +301,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 4,
+   "execution_count": null,
    "id": "2ddc2ec1",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "visit_all_paths_recursive! (generic function with 1 method)"
-      ]
-     },
-     "execution_count": 4,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "function visit_all_paths(C_sorted,city)\n",
     "    # Initialize path\n",
@@ -390,23 +338,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 5,
+   "execution_count": null,
    "id": "723a0f1a",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "I just completed route [1, 2, 4, 3]\n",
-      "I just completed route [1, 2, 3, 4]\n",
-      "I just completed route [1, 4, 2, 3]\n",
-      "I just completed route [1, 4, 3, 2]\n",
-      "I just completed route [1, 3, 4, 2]\n",
-      "I just completed route [1, 3, 2, 4]\n"
-     ]
-    }
-   ],
+   "outputs": [],
    "source": [
     "city = 1\n",
     "visit_all_paths(C_sorted,city)"
@@ -449,21 +384,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 6,
+   "execution_count": null,
    "id": "5989f0ac",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "tsp_serial_no_prune_recursive! (generic function with 1 method)"
-      ]
-     },
-     "execution_count": 6,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "verbose::Bool = true\n",
     "function tsp_serial_no_prune(C_sorted,city)\n",
@@ -503,33 +427,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 7,
+   "execution_count": null,
    "id": "d1be2bfc",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "I just completed route [1, 2, 4, 3]. Min distance so far is 6\n",
-      "I just completed route [1, 2, 3, 4]. Min distance so far is 6\n",
-      "I just completed route [1, 4, 2, 3]. Min distance so far is 6\n",
-      "I just completed route [1, 4, 3, 2]. Min distance so far is 6\n",
-      "I just completed route [1, 3, 4, 2]. Min distance so far is 6\n",
-      "I just completed route [1, 3, 2, 4]. Min distance so far is 6\n"
-     ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "6"
-      ]
-     },
-     "execution_count": 7,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "city = 1\n",
     "verbose = true\n",
@@ -563,21 +464,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 8,
+   "execution_count": null,
    "id": "8241e0df",
    "metadata": {},
-   "outputs": [
-    {
-     "data": {
-      "text/plain": [
-       "tsp_serial_recursive! (generic function with 1 method)"
-      ]
-     },
-     "execution_count": 8,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "function tsp_serial(C_sorted,city)\n",
     "    num_cities = length(C_sorted)\n",
@@ -621,33 +511,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 9,
+   "execution_count": null,
    "id": "998087f2",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "I just completed route [1, 2, 4, 3]. Min distance so far is 6\n",
-      "I am pruning at [1, 2, 3]\n",
-      "I am pruning at [1, 4, 2, 3]\n",
-      "I am pruning at [1, 4, 3, 2]\n",
-      "I am pruning at [1, 3, 4]\n",
-      "I am pruning at [1, 3, 2]\n"
-     ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "6"
-      ]
-     },
-     "execution_count": 9,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "city = 1\n",
     "verbose = true\n",
@@ -665,29 +532,10 @@
   },
   {
    "cell_type": "code",
-   "execution_count": 12,
+   "execution_count": null,
    "id": "e1eb74d8",
    "metadata": {},
-   "outputs": [
-    {
-     "name": "stdout",
-     "output_type": "stream",
-     "text": [
-      "  1.214294 seconds (1 allocation: 144 bytes)\n",
-      "  0.002645 seconds (1 allocation: 144 bytes)\n"
-     ]
-    },
-    {
-     "data": {
-      "text/plain": [
-       "\u001b[32m\u001b[1mTest Passed\u001b[22m\u001b[39m"
-      ]
-     },
-     "execution_count": 12,
-     "metadata": {},
-     "output_type": "execute_result"
-    }
-   ],
+   "outputs": [],
    "source": [
     "n = 11 # It is safe to test up to n=11 on a laptop\n",
     "using Random\n",