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A293716 E.g.f.: exp(x + 2*x^2 + 3*x^3). 2

%I

%S 1,1,5,31,145,1181,9661,77155,794081,8132185,86715541,1055208551,

%T 12921555505,166589628661,2320023320525,32814550442731,

%U 486870347843521,7598251948512305,121035455085677221,2008950533339620015,34595064617371963601,609252363677557660621

%N E.g.f.: exp(x + 2*x^2 + 3*x^3).

%H Seiichi Manyama, <a href="/A293716/b293716.txt">Table of n, a(n) for n = 0..533</a>

%F a(n) ~ 3^(2*n/3 - 1/2) * n^(2*n/3) * exp(-76/729 + 19*3^(1/3)*n^(1/3)/81 + 2*3^(2/3)*n^(2/3)/9 - 2*n/3). - _Vaclav Kotesovec_, Oct 15 2017

%t CoefficientList[Series[E^(x+2*x^2+3*x^3), {x, 0, 20}], x] * Range[0, 20]! (* _Vaclav Kotesovec_, Oct 15 2017 *)

%o (PARI) N=66; x='x+O('x^N); Vec(serlaplace(exp(x+2*x^2+3*x^3)))

%Y Column k=3 of A293718.

%K nonn

%O 0,3

%A _Seiichi Manyama_, Oct 15 2017

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Last modified October 15 18:04 EDT 2021. Contains 348033 sequences. (Running on oeis4.)