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 A294183 #19 Jun 03 2018 08:05:30
%S A294183 1,-984,393768,-129252576,38684099112,-10970838627984,
%T A294183 3003345011096352,-801909012374388672,210169391033048138280,
%U A294183 -54295810529811041175672,13867098270790394508774768,-3508693915623201191415922848
%N A294183 Coefficients in expansion of E_6/E_8.
%H A294183 Seiichi Manyama, <a href="/A294183/b294183.txt">Table of n, a(n) for n = 0..421</a>
%F A294183 Convolution inverse of A288840.
%F A294183 a(n) ~ (-1)^n * 512 * Pi^12 * exp(Pi*sqrt(3)*n) * n / (3 * Gamma(1/3)^18). - _Vaclav Kotesovec_, Jun 03 2018
%t A294183 terms = 12;
%t A294183 E6[x_] = 1 - 504*Sum[k^5*x^k/(1 - x^k), {k, 1, terms}];
%t A294183 E8[x_] = 1 + 480*Sum[k^7*x^k/(1 - x^k), {k, 1, terms}];
%t A294183 E6[x]/E8[x] + O[x]^terms // CoefficientList[#, x]& (* _Jean-François Alcover_, Feb 23 2018 *)
%Y A294183 Cf. A008410 (E_8). A013973 (E_6), A287933, A288840.
%Y A294183 E_k/E_{k+2}: A294181 (k=2), A294182 (k=4), this sequence (k=6).
%K A294183 sign
%O A294183 0,2
%A A294183 _Seiichi Manyama_, Feb 11 2018