Number T(n,k) of endofunctions on [n] with all cycles of length k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
A243098
Number T(n,k) of endofunctions on [n] with all cycles of length k; triangle T(n,k), n>=0, 0<=k<=n, read by rows.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =3a(5) =1a(6) =0a(7) =16a(8) =6a(9) =2a(10) =0a(11) =125a(12) =51a(13) =24a(14) =6a(15) =0a(16) =1296a(17) =560a(18) =300a(19) =120a(20) =24a(21) =0a(22) =16807a(23) =7575a(24) =4360a(25) =2160a(26) =720a(27) =120a(28) =0a(29) =262144
External references
- oeis: A243098