Did problem 11 in ipython.

ipython/EulerProblem012.ipynb

@@ -0,0 +1,66 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Euler Problem 12\n",
+    "\n",
+    "The sequence of triangle numbers is generated by adding the natural numbers. So the 7th triangle number would be $1 + 2 + 3 + 4 + 5 + 6 + 7 = 28$. The first ten terms would be:\n",
+    "\n",
+    "$1, 3, 6, 10, 15, 21, 28, 36, 45, 55, \\dots$\n",
+    "\n",
+    "Let us list the factors of the first seven triangle numbers:\n",
+    "\n",
+    "~~~\n",
+    " 1: 1\n",
+    " 3: 1,3\n",
+    " 6: 1,2,3,6\n",
+    "10: 1,2,5,10\n",
+    "15: 1,3,5,15\n",
+    "21: 1,3,7,21\n",
+    "28: 1,2,4,7,14,28\n",
+    "~~~\n",
+    "\n",
+    "We can see that 28 is the first triangle number to have over five divisors.\n",
+    "\n",
+    "What is the value of the first triangle number to have over five hundred divisors?"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "collapsed": true
+   },
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "completion_date": "Sun, 31 Aug 2014, 17:07",
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.5.4"
+  },
+  "tags": [
+   "triangular",
+   "number"
+  ]
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}