:: (Num a, Enum a) => [a] package:combinatorial

factorials :: Num a => [a]
combinatorial Combinatorics
equalFuncList Comb.factorial Comb.factorials 1000
catalanNumbers :: Num a => [a]
combinatorial Combinatorics
Compute the sequence of Catalan numbers by recurrence identity. It is catalanNumbers !! n == catalanNumber n 
equalFuncList Comb.catalanNumber Comb.catalanNumbers 1000
derangementNumbers :: Num a => [a]
combinatorial Combinatorics
Number of fix-point-free permutations with n elements. http://oeis.org/A000166 
equalFuncList Comb.derangementNumber Comb.derangementNumbers 1000
bellRec :: Num a => [a]
combinatorial Combinatorics.BellNumbers
List of Bell numbers computed with the recursive formula given in Wurzel 2004-06, page 136