Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3k)^k for 0 <= k <= n.

A248977

Triangle read by rows: T(n,k) is the coefficient A_k in the transformation of 1 + x + x^2 + ... + x^n to the polynomial A_k*(x+3k)^k for 0 <= k <= n.

Terms

    a(0) =1a(1) =-2a(2) =1a(3) =-2a(4) =-11a(5) =1a(6) =-2a(7) =70a(8) =-26a(9) =1a(10) =-2a(11) =-362a(12) =406a(13) =-47a(14) =1a(15) =-2a(16) =1663a(17) =-4994a(18) =1303a(19) =-74a(20) =1a(21) =-2a(22) =-7085a(23) =53326a(24) =-27857a(25) =3166a(26) =-107a(27) =1a(28) =-2a(29) =28636

External references