A171205 - OEIS

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A171205

G.f. satisfies: A(x) = (1 + x*A(2x))^5.

1, 5, 60, 1410, 62505, 5284401, 868838010, 281703950040, 181448450339760, 232989133846286240, 597389845561440183360, 3061032714235774931187200, 31357237236616342838622807040, 642321739861948533960660029617920

(list; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

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

FORMULA

Self-convolution 5th power of A171204 where a(n) = A171204(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))^5); polcoeff(A, n)}

CROSSREFS

Cf. A135868, A171200-A171203, A171204, A171206-A171211.

Sequence in context: A180614 A138447 A084939 * A214380 A218801 A303066

Adjacent sequences: A171202 A171203 A171204 * A171206 A171207 A171208

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Dec 05 2009

STATUS

approved