A032141 "CFK" (necklace, size, unlabeled) transform of 1,2,3,4...

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

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 A322440

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