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 A287933 #28 Mar 05 2018 07:31:41 %S A287933 1,-480,168480,-52199040,15119446560,-4198347132480,1132514464199040, %T A287933 -299116847254053120,77742157641008378400,-19951615350261029163360, %U A287933 5068304275307482667436480,-1276700988345016720650917760 %N A287933 Coefficients in expansion of 1/E_8. %H A287933 Seiichi Manyama, <a href="/A287933/b287933.txt">Table of n, a(n) for n = 0..422</a> %F A287933 a(n) ~ (-1)^n * c * exp(Pi*sqrt(3)*n) * n, where c = (262144 * Pi^24) / (81 * Gamma(1/3)^36) = 1.0839091249080051624370140889296742679583925822413671... - _Vaclav Kotesovec_, Jul 02 2017, updated Mar 05 2018 %Y A287933 Cf. A008410 (E_8). %Y A287933 Cf. A288816 (k=2), A001943 (k=4), A000706 (k=6), this sequence (k=8), A285836 (k=10), A287964 (k=14). %K A287933 sign %O A287933 0,2 %A A287933 _Seiichi Manyama_, Jun 17 2017