Triangle read by rows, T(n, k) = binomial(2*n-1, 2*k-1) * binomial(2*n-2*k, n-k) * (k+1) / binomial(n+k+1, n-k) for 0 <= k <= n.
A337841
Triangle read by rows, T(n, k) = binomial(2*n-1, 2*k-1) * binomial(2*n-2*k, n-k) * (k+1) / binomial(n+k+1, n-k) for 0 <= k <= n.
Terms
- a(0) =1a(1) =0a(2) =2a(3) =0a(4) =3a(5) =3a(6) =0a(7) =6a(8) =10a(9) =4a(10) =0a(11) =14a(12) =30a(13) =21a(14) =5a(15) =0a(16) =36a(17) =90a(18) =84a(19) =36a(20) =6a(21) =0a(22) =99a(23) =275a(24) =308a(25) =180a(26) =55a(27) =7a(28) =0a(29) =286
External references
- oeis: A337841