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 A003633 M3670 #24 Jan 25 2020 17:58:00 %S A003633 1,-1,1,4,-38,-78,5246,-11680,-2066056,22308440,1898577048, %T A003633 -48769559680,-3518093351728,174500124820560,11809059761527536, %U A003633 -1021558531563834368,-66133927485154902144,9433326815405995274624,578173001867228425792384 %N A003633 The sequence 2^(1-n)*a(n) is fixed (up to signs) by Stirling2 transform. %D A003633 N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence). %H A003633 M. Bernstein and N. J. A. Sloane, <a href="http://arXiv.org/abs/math.CO/0205301">Some canonical sequences of integers</a>, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210. [Link to arXiv version] %H A003633 M. Bernstein and N. J. A. Sloane, <a href="/A003633/a003633_1.pdf">Some canonical sequences of integers</a>, Linear Alg. Applications, 226-228 (1995), 57-72; erratum 320 (2000), 210. [Link to Lin. Alg. Applic. version together with omitted figures] %H A003633 N. J. A. Sloane, <a href="/transforms.txt">Transforms</a> %F A003633 The e.g.f. for the latter sequence satisfies A(x) + A(e^x - 1 ) = 2. %e A003633 The sequence that is fixed up to signs by STIRLING2 is 1, -1/2, 1/4, 4/8, -38/16, -78/32, 5246/64, ... %K A003633 sign,eigen %O A003633 1,4 %A A003633 _N. J. A. Sloane_, _Mira Bernstein_ %E A003633 More terms from _Vladeta Jovovic_, Jul 12 2001