A118342 Self-convolution cube of A108447.

1, 3, 15, 85, 519, 3330, 22135, 151089, 1052805, 7458236, 53554548, 388913046, 2851368587, 21076979445, 156907929177, 1175381112901, 8853057357159, 67007699270040, 509390314298820, 3887605401119964, 29775366104932044

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)^3, n)}

Crossrefs

Cf. A108447, A118341, A118343.

Sequence in context: A011900 A371754 A346374 * A084209 A317133 A182016

Adjacent sequences: A118339 A118340 A118341 * A118343 A118344 A118345

Keyword

nonn

Author

Paul D. Hanna, Apr 25 2006

Status

approved