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

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =15a(9) =1a(10) =1a(11) =4a(12) =70a(13) =220a(14) =1a(15) =1a(16) =5a(17) =210a(18) =5005a(19) =4845a(20) =1a(21) =1a(22) =6a(23) =495a(24) =48620a(25) =735471a(26) =142506a(27) =1a(28) =1a(29) =7