Triangle read by rows: T(n, k) = binomial(2*n, k-1)*binomial(2*n-k-1, n-k)/n for n, k >= 1, and T(n, 0) = 0^n.
A094385
Triangle read by rows: T(n, k) = binomial(2*n, k-1)*binomial(2*n-k-1, n-k)/n for n, k >= 1, and T(n, 0) = 0^n.
Terms
- a(0) =1a(1) =0a(2) =1a(3) =0a(4) =1a(5) =2a(6) =0a(7) =2a(8) =6a(9) =5a(10) =0a(11) =5a(12) =20a(13) =28a(14) =14a(15) =0a(16) =14a(17) =70a(18) =135a(19) =120a(20) =42a(21) =0a(22) =42a(23) =252a(24) =616a(25) =770a(26) =495a(27) =132a(28) =0a(29) =132
External references
- oeis: A094385