Triangle, read by rows, defined by T(n,k) = C(n^2 - k^2, n*k - k^2), for k=0..n, n>=0.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =3a(5) =1a(6) =1a(7) =28a(8) =10a(9) =1a(10) =1a(11) =455a(12) =495a(13) =35a(14) =1a(15) =1a(16) =10626a(17) =54264a(18) =8008a(19) =126a(20) =1a(21) =1a(22) =324632a(23) =10518300a(24) =4686825a(25) =125970a(26) =462a(27) =1a(28) =1a(29) =12271512