Triangular array read by rows: T(n,k) is the number of cubic n-permutations possessing exactly k cycles; n >= 0, 0 <= k <= n.
A348191
Triangular array read by rows: T(n,k) is the number of cubic n-permutations possessing exactly k cycles; n >= 0, 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =1a(6) =0a(7) =0a(8) =3a(9) =1a(10) =0a(11) =6a(12) =3a(13) =6a(14) =1a(15) =0a(16) =24a(17) =30a(18) =15a(19) =10a(20) =1a(21) =0a(22) =0a(23) =234a(24) =105a(25) =45a(26) =15a(27) =1a(28) =0a(29) =720
External references
- oeis: A348191