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# Starting in the top left corner of a 2×2 grid, and only being able to
# move to the right and down, there are exactly 6 routes to the bottom right corner.
#
#
# How many such routes are there through a 20×20 grid?
#
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# Look at Pascal's triangle ;)
# Every row with an odd amount of number contains the solution to any n-sided grid.

# This triangle is weird

# Solution: 137846528820