Triangle T(n, k, q) = q^k*Q(k, n, q), with T(0, 0, q) = -2, where Q(k, n, q) = (1/q)*( -Q(k-1, n, q) + (1+q)*p(q, k-1)^n), Q(k, 0, q) = -q*(1+q)^n, p(q, n) = Product_{j=1..n} ( (1-q^k)/(1-q) ), and q = 2, read by rows.

A156222

Triangle T(n, k, q) = q^k*Q(k, n, q), with T(0, 0, q) = -2, where Q(k, n, q) = (1/q)*( -Q(k-1, n, q) + (1+q)*p(q, k-1)^n), Q(k, 0, q) = -q*(1+q)^n, p(q, n) = Product_{j=1..n} ( (1-q^k)/(1-q) ), and q = 2, read by rows.

Terms

    a(0) =-2a(1) =-6a(2) =9a(3) =-18a(4) =21a(5) =-15a(6) =-54a(7) =57a(8) =-51a(9) =375a(10) =-162a(11) =165a(12) =-159a(13) =1131a(14) =4666413a(15) =-486a(16) =489a(17) =-483a(18) =3399a(19) =98015025a(21) =-1458a(22) =1461a(23) =-1455a(24) =10203a(25) =2058376701

External references