fast-arithmetic-0.4.0.0: Fast functions on integers.
Numeric.Pure
Description
Pure Haskell functions.
Synopsis
hsDerangement :: Integral a => Int -> a Source #
See here.
λ:> fmap derangement [0..10] :: [Integer] [1,0,1,2,9,44,265,1854,14833,133496,1334961]