Triangle read by rows: T(n, k) = (binomial(n,k)*binomial(n+k,k))^2 = A063007(n, k)^2, for n >= 0, k = 0..n.

A303987

Triangle read by rows: T(n, k) = (binomial(n,k)*binomial(n+k,k))^2 = A063007(n, k)^2, for n >= 0, k = 0..n.

Terms

    a(0) =1a(1) =1a(2) =4a(3) =1a(4) =36a(5) =36a(6) =1a(7) =144a(8) =900a(9) =400a(10) =1a(11) =400a(12) =8100a(13) =19600a(14) =4900a(15) =1a(16) =900a(17) =44100a(18) =313600a(19) =396900a(20) =63504a(21) =1a(22) =1764a(23) =176400a(24) =2822400a(25) =9922500a(26) =7683984a(27) =853776a(28) =1a(29) =3136

External references