A classification of permutations based on their cycle length and the size of the centralizer of their cycle type. Triangle read by rows, T(n, k) for 0 <= k <= n.
A339016
A classification of permutations based on their cycle length and the size of the centralizer of their cycle type. Triangle read by rows, T(n, k) for 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =0a(5) =2a(6) =0a(7) =0a(8) =0a(9) =6a(10) =0a(11) =0a(12) =0a(13) =3a(14) =21a(15) =0a(16) =0a(17) =0a(18) =0a(19) =35a(20) =85a(21) =0a(22) =0a(23) =0a(24) =0a(25) =55a(26) =255a(27) =410a(28) =0a(29) =0
External references
- oeis: A339016