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A032216 "DFK" (bracelet, size, unlabeled) transform of 1,2,3,4... 1
1, 1, 2, 5, 7, 15, 25, 43, 64, 120, 234, 348, 615, 995, 1817, 4060, 6039, 10505, 17947, 30268, 52289, 122862, 175180, 311547, 502859, 860833, 1359388, 2391385, 5262510, 7592091, 12992464, 20881955, 34210817, 54117104 (list; graph; refs; listen; history; text; internal format)
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 + k*x^k*y + O(x*x^n))))} \\ Andrew Howroyd, Jun 21 2018

CROSSREFS

Sequence in context: A111328 A244962 A022629 * A285290 A032141 A032045

Adjacent sequences:  A032213 A032214 A032215 * A032217 A032218 A032219

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 11:13 EDT 2018. Contains 316379 sequences. (Running on oeis4.)