Irregular triangle read by rows: T(n,k) = number of Havender tableaux of height 2 with n columns and k empty squares (n >= 0, 0 <= k <= 2*n).
A259992
Irregular triangle read by rows: T(n,k) = number of Havender tableaux of height 2 with n columns and k empty squares (n >= 0, 0 <= k <= 2*n).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =1a(4) =2a(5) =6a(6) =8a(7) =4a(8) =1a(9) =5a(10) =20a(11) =36a(12) =38a(13) =21a(14) =6a(15) =1a(16) =14a(17) =70a(18) =160a(19) =220a(20) =202a(21) =116a(22) =40a(23) =8a(24) =1a(25) =42a(26) =252a(27) =700a(28) =1190a(29) =1380
External references
- oeis: A259992