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A118341 Self-convolution square of A108447. 2
1, 2, 9, 48, 282, 1762, 11488, 77270, 532239, 3735488, 26617976, 192061278, 1400453568, 10303466638, 76391703591, 570195719792, 4281169118106, 32312317899352, 245016567557504, 1865677590201192, 14259825593908356 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..20.

PROG

(PARI) {a(n)=polcoeff((serreverse(x*(1-x+sqrt((1-x)*(1-5*x)+x*O(x^n)))/2/(1-x))/x)^2, n)}

CROSSREFS

Cf. A108447, A118342, A118343.

Sequence in context: A047059 A153297 A153390 * A171803 A100427 A214404

Adjacent sequences:  A118338 A118339 A118340 * A118342 A118343 A118344

KEYWORD

nonn

AUTHOR

Paul D. Hanna, Apr 25 2006

STATUS

approved

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Last modified August 15 13:11 EDT 2020. Contains 336504 sequences. (Running on oeis4.)