A145164 G.f. A(x) satisfies A(x/A(x)) = 1/(1-x)^4.

1, 4, 26, 268, 3851, 69308, 1459552, 34513468, 893162569, 24873809192, 736914860764, 23034718900652, 755096654861093, 25838920473462512, 919688365896843632, 33951797935609852260, 1296987353334993492885

Offset

0,2

Links

Table of n, a(n) for n=0..16.

Formula

Self-convolution 4th power of A145162.

Self-convolution square of A145163.

Prog

(PARI) {a(n)=local(A=1+x+x*O(x^n), B); for(n=0, n, B=serreverse(x/A); A=1/(1-B)^4); polcoeff(A, n)}

Crossrefs

Cf. A145162, A145163.

Sequence in context: A002465 A248668 A079473 * A113078 A177451 A304864

Adjacent sequences: A145161 A145162 A145163 * A145165 A145166 A145167

Keyword

nonn

Author

Paul D. Hanna, Oct 03 2008

Status

approved