cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A347916 E.g.f.: Product_{k>=1} (1 + x^k)^exp(-x).

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%I A347916 #9 Sep 19 2021 08:03:29
%S A347916 1,1,0,6,6,75,1025,1225,43988,471345,5084387,40870181,866782774,
%T A347916 8473297261,165871287465,3934845305287,23390789927784,956832091069057,
%U A347916 21869141108144439,269518811758178785,8437830353620298346,220696789738463945981,3231280243441039496181,125072102239522472394691
%N A347916 E.g.f.: Product_{k>=1} (1 + x^k)^exp(-x).
%F A347916 E.g.f.: exp( exp(-x) * Sum_{k>=1} A000593(k)*x^k/k ).
%F A347916 E.g.f.: exp( exp(-x) * Sum_{k>=1} x^k/(k*(1 - x^(2*k))) ).
%o A347916 (PARI) N=40; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, (1+x^k)^exp(-x))))
%o A347916 (PARI) N=40; x='x+O('x^N); Vec(serlaplace(exp(exp(-x)*sum(k=1, N, sigma(k>>valuation(k, 2))*x^k/k))))
%o A347916 (PARI) N=40; x='x+O('x^N); Vec(serlaplace(exp(exp(-x)*sum(k=1, N, x^k/(k*(1-x^(2*k)))))))
%Y A347916 Cf. A000593, A088311, A346548, A347915.
%K A347916 nonn
%O A347916 0,4
%A A347916 _Seiichi Manyama_, Sep 18 2021