# Grains
Write a program that calculates the number of grains of wheat on a chessboard given that the number on each square is double the previous one.
There are 64 squares on a chessboard.
#Example:
square(1) = 1
square(2) = 2
square(3) = 4
square(4) = 8
etc...
Write a program that shows how many grains were on each square
square=lambda n:1<<n-1
square=lambda n:1<<n-1