Added problems till 60 to ipynb.

ipython/EulerProblem055.ipynb

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+   "source": [
+    "# Lychrel numbers (Euler Problem 55)"
+   ]
+  },
+  {
+   "cell_type": "markdown",
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+   },
+   "source": [
+    "[https://projecteuler.net/problem=55](https://projecteuler.net/problem=55)\n",
+    "\n",
+    "If we take 47, reverse and add, 47 + 74 = 121, which is palindromic.\n",
+    "\n",
+    "Not all numbers produce palindromes so quickly. For example,\n",
+    "\n",
+    "$349 + 943 = 1292$\n",
+    "\n",
+    "$1292 + 2921 = 4213$\n",
+    "\n",
+    "$4213 + 3124 = 7337$\n",
+    "\n",
+    "That is, 349 took three iterations to arrive at a palindrome.\n",
+    "\n",
+    "Although no one has proved it yet, it is thought that some numbers, like 196, never produce a palindrome. A number that never forms a palindrome through the reverse and add process is called a Lychrel number. Due to the theoretical nature of these numbers, and for the purpose of this problem, we shall assume that a number is Lychrel until proven otherwise. In addition you are given that for every number below ten-thousand, it will either (i) become a palindrome in less than fifty iterations, or, (ii) no one, with all the computing power that exists, has managed so far to map it to a palindrome. In fact, 10677 is the first number to be shown to require over fifty iterations before producing a palindrome: 4668731596684224866951378664 (53 iterations, 28-digits).\n",
+    "\n",
+    "Surprisingly, there are palindromic numbers that are themselves Lychrel numbers; the first example is 4994.\n",
+    "\n",
+    "How many Lychrel numbers are there below ten-thousand?\n",
+    "\n",
+    "NOTE: Wording was modified slightly on 24 April 2007 to emphasise the theoretical nature of Lychrel numbers."
+   ]
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