Array read by antidiagonals: T(n,k) = n^3*k^3*(n+k)^2, n>=1, k>=1.

Terms

a(0) =4a(1) =72a(2) =72a(3) =432a(4) =1024a(5) =432a(6) =1600a(7) =5400a(8) =5400a(9) =1600a(10) =4500a(11) =18432a(12) =26244a(13) =18432a(14) =4500a(15) =10584a(16) =49000a(17) =84672a(18) =84672a(19) =49000a(20) =10584a(21) =21952a(22) =110592a(23) =216000a(24) =262144a(25) =216000a(26) =110592a(27) =21952a(28) =41472a(29) =222264