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A032147 "CGJ" (necklace, element, labeled) transform of 2,2,2,2... 1
1, 2, 4, 14, 72, 262, 2266, 13582, 78952, 1073318, 6111354, 51512782, 711544290, 7083724494, 53971180750, 497724073414, 12107546905192, 92786772785254, 1022794345965706, 9782774173172782, 237827594204392882, 3191236514753612878, 31668668622796517470 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Andrew Howroyd, Table of n, a(n) for n = 0..200

C. G. Bower, Transforms (2)

Index entries for sequences related to Lyndon words

PROG

(PARI) seq(n)=[subst(serlaplace(p/y), y, 1) | p <- Vec(y-1+serlaplace(prod(k=1, n, 1 + x^k*y/k! + O(x*x^n))^2))] \\ Andrew Howroyd, Sep 11 2018

CROSSREFS

Sequence in context: A245139 A020131 A261002 * A007712 A192815 A075098

Adjacent sequences:  A032144 A032145 A032146 * A032148 A032149 A032150

KEYWORD

nonn

AUTHOR

Christian G. Bower

EXTENSIONS

a(0)=1 prepended and terms a(20) and beyond from Andrew Howroyd, Sep 11 2018

STATUS

approved

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Last modified October 21 07:06 EDT 2018. Contains 316405 sequences. (Running on oeis4.)