Triangle T(n, k) = [x^k](p(x, n, q)) where p(x,n,q) = Product_{j=1..n} (x + q^j) + Product_{j=1..n} (x*q^j + 1), p(x, 0, q) = 1, and q = 2, read by rows.

A173048

Triangle T(n, k) = [x^k](p(x, n, q)) where p(x,n,q) = Product_{j=1..n} (x + q^j) + Product_{j=1..n} (x*q^j + 1), p(x, 0, q) = 1, and q = 2, read by rows.

Terms

    a(0) =1a(1) =3a(2) =3a(3) =9a(4) =12a(5) =9a(6) =65a(7) =70a(8) =70a(9) =65a(10) =1025a(11) =990a(12) =560a(13) =990a(14) =1025a(15) =32769a(16) =31806a(17) =11160a(18) =11160a(19) =31806a(20) =32769a(21) =2097153a(22) =2064510a(23) =671832a(24) =178560a(25) =671832a(26) =2064510a(27) =2097153a(28) =268435457a(29) =266338558

External references