Table by antidiagonals, T(n,k) is the number of partitions of {1..(nk)} that are invariant under a permutation consisting of n k-cycles.
A162663
Table by antidiagonals, T(n,k) is the number of partitions of {1..(nk)} that are invariant under a permutation consisting of n k-cycles.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =2a(6) =1a(7) =2a(8) =7a(9) =5a(10) =1a(11) =3a(12) =8a(13) =31a(14) =15a(15) =1a(16) =2a(17) =16a(18) =42a(19) =164a(20) =52a(21) =1a(22) =4a(23) =10a(24) =111a(25) =268a(26) =999a(27) =203a(28) =1a(29) =2
External references
- oeis: A162663