Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of Baxter matrices of size n X k.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =6a(5) =1a(6) =1a(7) =14a(8) =14a(9) =1a(10) =1a(11) =24a(12) =69a(13) =24a(14) =1a(15) =1a(16) =36a(17) =203a(18) =203a(19) =36a(20) =1a(21) =1a(22) =50a(23) =463a(24) =972a(25) =463a(26) =50a(27) =1a(28) =1a(29) =66