Triangle read by rows. T(n, k) = binomial(n + k, 2*k)^2.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =9a(5) =1a(6) =1a(7) =36a(8) =25a(9) =1a(10) =1a(11) =100a(12) =225a(13) =49a(14) =1a(15) =1a(16) =225a(17) =1225a(18) =784a(19) =81a(20) =1a(21) =1a(22) =441a(23) =4900a(24) =7056a(25) =2025a(26) =121a(27) =1a(28) =1a(29) =784