Triangular array: the fusion of polynomial sequences P and Q given by p(n,x)=(x+2)^n and q(n,x)=(x+1)^n.

A193724

Triangular array: the fusion of polynomial sequences P and Q given by p(n,x)=(x+2)^n and q(n,x)=(x+1)^n.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =3a(6) =4a(7) =16a(8) =21a(9) =9a(10) =8a(11) =44a(12) =90a(13) =81a(14) =27a(15) =16a(16) =112a(17) =312a(18) =432a(19) =297a(20) =81a(21) =32a(22) =272a(23) =960a(24) =1800a(25) =1890a(26) =1053a(27) =243a(28) =64a(29) =640

External references