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A032300 "EFJ" (unordered, size, labeled) transform of 1,3,5,7,... 3

%I #8 Sep 11 2018 17:03:27

%S 1,1,3,14,27,194,1280,4087,17899,177410,1829004,6191393,39601452,

%T 221669681,3187238613,46728961697,184114626107,1217996265362,

%U 8854410188516,68536459359829,1305896806285888,26706311366603507,116616474061307483,879466953545771963

%N "EFJ" (unordered, size, labeled) transform of 1,3,5,7,...

%H Andrew Howroyd, <a href="/A032300/b032300.txt">Table of n, a(n) for n = 0..200</a>

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

%F E.g.f.: Product_{k > 0} (1 + (2*k-1)*x^k/k!). - _Andrew Howroyd_, Sep 11 2018

%o (PARI) seq(n)={Vec(serlaplace(prod(k=1, n, 1 + (2*k-1)*x^k/k! + O(x*x^n))))} \\ _Andrew Howroyd_, Sep 11 2018

%K nonn

%O 0,3

%A _Christian G. Bower_

%E a(0)=1 prepended and terms a(22) and beyond from _Andrew Howroyd_, Sep 11 2018

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Last modified April 23 11:35 EDT 2024. Contains 371912 sequences. (Running on oeis4.)