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A032141 "CFK" (necklace, size, unlabeled) transform of 1,2,3,4... 1
1, 1, 2, 5, 7, 15, 31, 51, 86, 171, 388, 575, 1093, 1795, 3417, 7825, 11754, 20585, 35432, 59947, 103943, 244933, 349513, 622059, 1004616, 1720341, 2717372, 4781105, 10523263, 15182123, 25982763, 41761399, 68419002, 108231183 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

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

Index entries for sequences related to Lyndon words

C. G. Bower, Transforms (2)

PROG

(PARI) seq(n)={apply(p->subst(serlaplace(p/y), y, 1), 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: A022629 A032216 A285290 * A032045 A207035 A067580

Adjacent sequences:  A032138 A032139 A032140 * A032142 A032143 A032144

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 18 14:58 EDT 2018. Contains 316323 sequences. (Running on oeis4.)