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A032159 "CGK" (necklace, element, unlabeled) transform of 1,3,5,7,... 1

%I #9 Sep 13 2018 15:46:48

%S 1,1,3,8,15,37,83,184,443,1007,2369,5536,12941,30203,70383,164822,

%T 380489,887367,2051543,4727014,10906833,25042049,57393717,130934806,

%U 298811135,679012501,1538770499,3479066516,7844360471

%N "CGK" (necklace, element, unlabeled) transform of 1,3,5,7,...

%H Andrew Howroyd, <a href="/A032159/b032159.txt">Table of n, a(n) for n = 0..500</a>

%H C. G. Bower, <a href="/transforms2.html">Transforms (2)</a>

%H <a href="/index/Lu#Lyndon">Index entries for sequences related to Lyndon words</a>

%o (PARI) seq(n)=[subst(serlaplace(p/y),y,1) | p <- Vec(y-1+prod(k=1, n, (1 + x^k*y + O(x*x^n))^(2*k-1)))] \\ _Andrew Howroyd_, Sep 13 2018

%K nonn

%O 0,3

%A _Christian G. Bower_

%E a(0)=1 prepended by _Andrew Howroyd_, Sep 13 2018

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)