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A118342
Self-convolution cube of A108447.
3
1, 3, 15, 85, 519, 3330, 22135, 151089, 1052805, 7458236, 53554548, 388913046, 2851368587, 21076979445, 156907929177, 1175381112901, 8853057357159, 67007699270040, 509390314298820, 3887605401119964, 29775366104932044
OFFSET
0,2
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
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Apr 25 2006
STATUS
approved