Triangle T(n,k) read by rows, T(n, k) = binomial(2*k, k)*binomial(n, k), 0<=k<=n.

Terms

a(0) =1a(1) =1a(2) =2a(3) =1a(4) =4a(5) =6a(6) =1a(7) =6a(8) =18a(9) =20a(10) =1a(11) =8a(12) =36a(13) =80a(14) =70a(15) =1a(16) =10a(17) =60a(18) =200a(19) =350a(20) =252a(21) =1a(22) =12a(23) =90a(24) =400a(25) =1050a(26) =1512a(27) =924a(28) =1a(29) =14