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A032222 "DGJ" (bracelet, element, labeled) transform of 2,2,2,2... 1

%I #8 Sep 11 2018 21:27:09

%S 1,2,4,14,48,162,1186,6918,39696,537170,3056574,25758438,355775778,

%T 3541870438,26985605042,248862069474,6053773511696,46393386523698,

%U 511397173220686,4891387087110678,118913797103152638

%N "DGJ" (bracelet, element, labeled) transform of 2,2,2,2...

%H Andrew Howroyd, <a href="/A032222/b032222.txt">Table of n, a(n) for n = 0..200</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(serlaplace(y-1+prod(k=1, n, 1 + x^k*y/k! + O(x*x^n))^2))] \\ _Andrew Howroyd_, Sep 11 2018

%K nonn

%O 0,2

%A _Christian G. Bower_

%E a(0)=1 prepended by _Andrew Howroyd_, Sep 11 2018

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Last modified April 23 05:20 EDT 2024. Contains 371906 sequences. (Running on oeis4.)