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 A345752 #15 Feb 16 2025 08:34:02 %S A345752 1,-1,-2,-3,0,55,572,4865,40912,351675,2978196,23418373,148849544, %T A345752 84185855,-27459134420,-881482705719,-21652972750464,-487503384038525, %U A345752 -10785437160748156,-242968902040697011,-5627949704687484872,-133358411031825299385 %N A345752 E.g.f.: Product_{k>=1} (1 - (exp(x) - 1)^k / k). %C A345752 Stirling transform of A292359. %H A345752 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %H A345752 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/StirlingTransform.html">Stirling Transform</a> %F A345752 a(n) = Sum_{k=0..n} Stirling2(n,k) * A292359(k). %t A345752 max = 21; Range[0, max]! * CoefficientList[Series[Product[1 - (Exp[x] - 1)^k/k, {k, 1, max}], {x, 0, max}], x] (* _Amiram Eldar_, Jun 26 2021 *) %o A345752 (PARI) my(N=40, x='x+O('x^N)); Vec(serlaplace(prod(k=1, N, 1-(exp(x)-1)^k/k))) %Y A345752 Cf. A048993, A292359, A305986, A305987, A345751. %K A345752 sign %O A345752 0,3 %A A345752 _Seiichi Manyama_, Jun 26 2021