75772domain: NAppears in sequencesa(n) = T(n,n-6), array T as in A055801.at n=38A055806Partial sums of A100381.at n=9A196514Triangle read by rows: T(n,k) is the coefficient A_k in the transformation Sum_{k=0..n} (k+1)*x^k = Sum_{k=0..n} A_k*(x-2)^k.at n=48A246797a(n) = Sum_{k=0..floor(n/3)} binomial(k+2,3*n-9*k+2).at n=54A390037