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.
%I A294463 #15 May 29 2018 00:47:15
%S A294463 1,-1,-2,0,-12,180,-1080,15120,-45360,-15120,6501600,166320000,
%T A294463 -6017457600,73297224000,724669545600,-32528399904000,169180371360000,
%U A294463 6794185638240000,-119705492402496000,2601008778880512000,-119160456995099520000
%N A294463 E.g.f.: Product_{k>0} (1-k*x^k)^(1/k).
%H A294463 Seiichi Manyama, <a href="/A294463/b294463.txt">Table of n, a(n) for n = 0..425</a>
%F A294463 a(0) = 1 and a(n) = -(n-1)! * Sum_{k=1..n} A055225(k)*a(n-k)/(n-k)! for n > 0.
%F A294463 E.g.f.: exp(-Sum_{k>=1} Sum_{j>=1} j^(k-1)*x^(j*k)/k). - _Ilya Gutkovskiy_, May 28 2018
%o A294463 (PARI) N=66; x='x+O('x^N); Vec(serlaplace(prod(k=1, N, (1-k*x^k)^(1/k))))
%Y A294463 Cf. A028343, A055225, A294462.
%K A294463 sign
%O A294463 0,3
%A A294463 _Seiichi Manyama_, Oct 31 2017