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 A293267 #3 Oct 04 2017 13:19:12 %S A293267 1,0,-1,0,3,12,35,61,-153,-2197,-11330,-6513,576693,8039161,74592474, %T A293267 536729860,2823657417,5689440944,-93424479237,-1452915372079, %U A293267 -9514285768034,42246743764900,2340471395600501,42987651613157615,564523206912685856,5656832720379572809 %N A293267 Coefficients in asymptotic expansion of sequence A293236. %H A293267 Vaclav Kotesovec, <a href="/A293267/b293267.txt">Table of n, a(n) for n = 0..39</a> %e A293267 A293236(n) / ((-1)^n * n!) ~ 1 - 1/n^2 + 3/n^4 + 12/n^5 + 35/n^6 + ... %Y A293267 Cf. A293236. %K A293267 sign %O A293267 0,5 %A A293267 _Vaclav Kotesovec_, Oct 04 2017