project-euler/Sidef/006 Sum square difference -- v2.sf

#!/usr/bin/ruby

# Daniel "Trizen" Șuteu
# Date: 30 October 2017
# https://github.com/trizen

# https://projecteuler.net/problem=6

# Runtime: 0.148s

say (faulhaber(100, 1)**2 - faulhaber(100, 2))