Number T(n,k) of endofunctions on [n] whose cycle lengths are multiples of k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
A246609
Number T(n,k) of endofunctions on [n] whose cycle lengths are multiples of k; triangle T(n,k), n >= 0, 0 <= k <= n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =4a(5) =1a(6) =0a(7) =27a(8) =6a(9) =2a(10) =0a(11) =256a(12) =57a(13) =24a(14) =6a(15) =0a(16) =3125a(17) =680a(18) =300a(19) =120a(20) =24a(21) =0a(22) =46656a(23) =9945a(24) =4480a(25) =2160a(26) =720a(27) =120a(28) =0a(29) =823543
External references
- oeis: A246609