A032217 "DFK" (bracelet, size, unlabeled) transform of 1,3,5,7...

1, 1, 3, 8, 12, 31, 56, 107, 168, 372, 830, 1302, 2527, 4370, 9478, 25268, 38655, 72876, 133073, 238255, 477957, 1357657, 1967349, 3747310, 6374674, 11569115, 19219719, 38342864, 104469668, 150682797, 276855048

Offset

0,3

Links

Andrew Howroyd, Table of n, a(n) for n = 0..1000

C. G. Bower, Transforms (2)

Prog

(PARI) seq(n)={apply(p->subst(serlaplace(p/y + polcoeff(p, 1) + polcoeff(p, 2)), y, 1)/2, Vec(y-1+prod(k=1, n, 1 + (2*k-1)*x^k*y + O(x*x^n))))} \\ Andrew Howroyd, Jun 21 2018

Crossrefs

Sequence in context: A178720 A027292 A032304 * A032142 A032046 A247396

Adjacent sequences: A032214 A032215 A032216 * A032218 A032219 A032220

Keyword

nonn

Author

Christian G. Bower

Extensions

a(0)=1 prepended by Andrew Howroyd, Jun 21 2018

Status

approved