Triangular array read by rows: T(n,k) is the number of endofunctions f:{1,2,...,n}-> {1,2,...,n} whose largest component has exactly k nodes; n>=1, 1<=k<=n.
A209324
Triangular array read by rows: T(n,k) is the number of endofunctions f:{1,2,...,n}-> {1,2,...,n} whose largest component has exactly k nodes; n>=1, 1<=k<=n.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =1a(4) =9a(5) =17a(6) =1a(7) =45a(8) =68a(9) =142a(10) =1a(11) =165a(12) =680a(13) =710a(14) =1569a(15) =1a(16) =855a(17) =6290a(18) =8520a(19) =9414a(20) =21576a(21) =1a(22) =3843a(23) =47600a(24) =134190a(25) =131796a(26) =151032a(27) =355081a(28) =1a(29) =21819
External references
- oeis: A209324