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A171206 G.f. satisfies: A(x) = 1 + x*A(2x)^6. 3
1, 1, 12, 348, 19744, 2108784, 428817600, 169398274624, 131889504749568, 203937600707475456, 628561895904796999680, 3868208404121906515820544, 47571342639450113377565933568, 1169589733863427138021074362433536 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Table of n, a(n) for n=0..13.

PROG

(PARI) {a(n)=local(A=1+x+x*O(x^n)); for(i=0, n, A=1+x*subst(A, x, 2*x)^6); polcoeff(A, n)}

CROSSREFS

Cf. A135867, A171200-A171205, A171207, A171208-A171211.

Sequence in context: A077296 A080481 A209425 * A219407 A203148 A120813

Adjacent sequences:  A171203 A171204 A171205 * A171207 A171208 A171209

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 05 2009

STATUS

approved

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Last modified July 1 12:30 EDT 2022. Contains 354973 sequences. (Running on oeis4.)