project_euler.problem_042.solution42
====================================

.. py:module:: project_euler.problem_042.solution42

.. autoapi-nested-parse::

   The nth term of the sequence of triangle numbers is given by, tn = ½n(n+1); so
   the first ten triangle numbers are:

   1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...

   By converting each letter in a word to a number corresponding to its
   alphabetical position and adding these values we form a word value. For example,
   the word value for SKY is 19 + 11 + 25 = 55 = t10. If the word value is a
   triangle number then we shall call the word a triangle word.

   Using words.txt (right click and 'Save Link/Target As...'), a 16K text file
   containing nearly two-thousand common English words, how many are triangle
   words?



Attributes
----------

.. autoapisummary::

   project_euler.problem_042.solution42.TRIANGULAR_NUMBERS


Functions
---------

.. autoapisummary::

   project_euler.problem_042.solution42.solution


Module Contents
---------------

.. py:function:: solution()

   Finds the amount of triangular words in the words file.

   >>> solution()
   162


.. py:data:: TRIANGULAR_NUMBERS