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A032214 "DFK" (bracelet, size, unlabeled) transform of 2,2,2,2... 1
1, 2, 2, 6, 6, 10, 18, 22, 30, 42, 98, 110, 174, 234, 346, 798, 958, 1458, 2058, 2990, 4022, 9234, 10746, 16774, 22950, 33682, 44562, 64182, 126230, 154778, 229986, 317766, 452206, 607290, 851314, 1120158, 2130750, 2567162 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

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*x^k*y + O(x*x^n))))} \\ Andrew Howroyd, Jun 21 2018

CROSSREFS

Sequence in context: A082542 A162776 A032302 * A290261 A007040 A032139

Adjacent sequences:  A032211 A032212 A032213 * A032215 A032216 A032217

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

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

STATUS

approved

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Last modified October 20 15:22 EDT 2018. Contains 316388 sequences. (Running on oeis4.)