Triangle read by rows: T(n,k) (n>=1, 1 <= k <= n) = number of permutations of [1..n] in which all cycle lengths are divisible by k.

A213279

Triangle read by rows: T(n,k) (n>=1, 1 <= k <= n) = number of permutations of [1..n] in which all cycle lengths are divisible by k.

Terms

    a(0) =1a(1) =2a(2) =1a(3) =6a(4) =0a(5) =2a(6) =24a(7) =9a(8) =0a(9) =6a(10) =120a(11) =0a(12) =0a(13) =0a(14) =24a(15) =720a(16) =225a(17) =160a(18) =0a(19) =0a(20) =120a(21) =5040a(22) =0a(23) =0a(24) =0a(25) =0a(26) =0a(27) =720a(28) =40320a(29) =11025

External references