Triangle of numbers a(n,k) = number of Young tableaux with n cells and k rows (1 <= k <= n); also number of self-inverse permutations on n letters in which the length of the longest scattered (i.e., not necessarily contiguous) increasing subsequence is k.
A047884
Triangle of numbers a(n,k) = number of Young tableaux with n cells and k rows (1 <= k <= n); also number of self-inverse permutations on n letters in which the length of the longest scattered (i.e., not necessarily contiguous) increasing subsequence is k.
Terms
- a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =3a(9) =1a(10) =1a(11) =9a(12) =11a(13) =4a(14) =1a(15) =1a(16) =19a(17) =31a(18) =19a(19) =5a(20) =1a(21) =1a(22) =34a(23) =92a(24) =69a(25) =29a(26) =6a(27) =1a(28) =1a(29) =69
External references
- oeis: A047884