A032140 "CFK" (necklace, size, unlabeled) transform of 2,1,1,1...

1, 2, 1, 3, 3, 4, 8, 9, 13, 16, 32, 35, 53, 68, 92, 157, 193, 264, 356, 487, 609, 1036, 1224, 1729, 2237, 3072, 3904, 5227, 7853, 9764, 13148, 17261, 22817, 29512, 38980, 48999, 72953, 88828, 119376, 152449, 202941, 255592, 337472

Offset

0,2

Links

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

C. G. Bower, Transforms (2)

Index entries for sequences related to Lyndon words

Prog

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

Crossrefs

Sequence in context: A141576 A078019 A038071 * A032044 A321762 A158974

Adjacent sequences: A032137 A032138 A032139 * A032141 A032142 A032143

Keyword

nonn

Author

Christian G. Bower

Extensions

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

Status

approved