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A032231 "DGK" (bracelet, element, unlabeled) transform of 2,2,2,2,... 1

%I #8 Sep 13 2018 17:23:45

%S 1,2,3,6,9,14,24,40,64,120,197,348,609,1098,1808,3078,5602,9118,15789,

%T 25568,43857,73632,120882,195236,317706,532906,843805,1387158,2184539,

%U 3473958,5532978,8954424,13933058,21956952

%N "DGK" (bracelet, element, unlabeled) transform of 2,2,2,2,...

%H Andrew Howroyd, <a href="/A032231/b032231.txt">Table of n, a(n) for n = 0..1000</a>

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

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

%K nonn

%O 0,2

%A _Christian G. Bower_

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

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)