A132867 Expansion of 1/(1-7x*c(8x)), where c(x) is the g.f. of A000108.

1, 7, 105, 2023, 44233, 1043847, 25921833, 667598631, 17669646729, 477706767559, 13136097627625, 366267006096999, 10331118817064521, 294265822473133063, 8452135970510611113, 244534782069771034023, 7119789572700157711113, 208459073966103650720583

Offset

0,2

Links

Table of n, a(n) for n=0..17.

Formula

a(n) = Sum_{k=0..n} A039599(n,k)*(-1)^k*8^(n-k). - Philippe Deléham, Dec 11 2007

G.f.: 16/(9 + 7*sqrt(1-32*x)). - Philippe Deléham, Oct 27 2011

Mathematica

CoefficientList[Series[16/(9+7*Sqrt[1-32*x]), {x, 0, 16}], x] (* Georg Fischer, Apr 08 2020 *)

Prog

(PARI) seq(n)={Vec(16/(9+7*sqrt(1-32*x + O(x*x^n))))} \\ Andrew Howroyd, Apr 08 2020

Crossrefs

Cf. A039599.

Sequence in context: A368351 A358957 A131869 * A145666 A350931 A344445

Adjacent sequences: A132864 A132865 A132866 * A132868 A132869 A132870

Keyword

nonn

Author

Philippe Deléham, Nov 18 2007

Extensions

More terms from Philippe Deléham, Oct 27 2011

a(9) corrected by Georg Fischer, Apr 08 2020

Status

approved