A118341 Self-convolution square of A108447.

1, 2, 9, 48, 282, 1762, 11488, 77270, 532239, 3735488, 26617976, 192061278, 1400453568, 10303466638, 76391703591, 570195719792, 4281169118106, 32312317899352, 245016567557504, 1865677590201192, 14259825593908356

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: A153297 A364734 A153390 * A365133 A171803 A368961

Adjacent sequences: A118338 A118339 A118340 * A118342 A118343 A118344

Keyword

nonn

Author

Paul D. Hanna, Apr 25 2006

Status

approved