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A171211 G.f. satisfies: A(x) = (1 + x*A(2x))^8. 11
1, 8, 156, 5944, 425286, 57811000, 15246040860, 7918843018760, 8165859019876353, 16781575370067304448, 68855523432488884833408, 564547878300963670909315840, 9253510119618208634494942344960 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..12.

FORMULA

Self-convolution 8th power of A171210 where a(n) = A171210(n+1)/2^n for n>=0.

PROG

(PARI) {a(n)=local(A=1+x+x*O(x^n)); for(i=0, n, A=(1+x*subst(A, x, 2*x))^8); polcoeff(A, n)}

CROSSREFS

Cf. A135868, A171200-A171209, A171210.

Sequence in context: A120348 A251586 A221098 * A211043 A025605 A114223

Adjacent sequences:  A171208 A171209 A171210 * A171212 A171213 A171214

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 05 2009

STATUS

approved

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Last modified October 19 03:08 EDT 2019. Contains 328211 sequences. (Running on oeis4.)