Triangle T(n,k), 0 <= k <= n, read by rows defined by: T(n,k) = (binomial(2*n,2*k) + binomial(2*n+1,2*k))/2.

A232535

Triangle T(n,k), 0 <= k <= n, read by rows defined by: T(n,k) = (binomial(2*n,2*k) + binomial(2*n+1,2*k))/2.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =1a(4) =8a(5) =3a(6) =1a(7) =18a(8) =25a(9) =4a(10) =1a(11) =32a(12) =98a(13) =56a(14) =5a(15) =1a(16) =50a(17) =270a(18) =336a(19) =105a(20) =6a(21) =1a(22) =72a(23) =605a(24) =1320a(25) =891a(26) =176a(27) =7a(28) =1a(29) =98

External references