A145169 G.f. A(x) satisfies A(x/A(x)^2) = 1/(1-x)^3.

1, 3, 24, 361, 7851, 214245, 6815986, 242659191, 9431036685, 393771017068, 17469277612998, 817033067908275, 40050828368606412, 2048642917085523633, 108968676087557745858, 6010617981960195923285, 343038687551360605111371

Offset

0,2

Links

Vaclav Kotesovec, Table of n, a(n) for n = 0..180

Formula

Self-convolution cube of A145167.

Self-convolution square yields A145170.

Prog

(PARI) {a(n)=local(A=1+x+x*O(x^n), B); for(n=0, n, B=serreverse(x/A^2); A=1/(1-B)^3); polcoeff(A, n)}

Crossrefs

Cf. A145167, A145168, A145170 (A^2).

Sequence in context: A366000 A332975 A010791 * A193210 A065761 A002832

Adjacent sequences: A145166 A145167 A145168 * A145170 A145171 A145172

Keyword

nonn

Author

Paul D. Hanna, Oct 03 2008

Status

approved