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 A280024 #19 Feb 27 2018 04:57:43
%S A280024 1,144,-17712,524736,-2279088,-79760160,71126208,7093116288,
%T A280024 65399933520,370698709968,1592500629600,5659924638528,17465468914368,
%U A280024 48233085519456,121766302456704,285303917520000,627654170451024,1308136029869088,2601247015228176
%N A280024 Coefficients in q-expansion of E_2^4*E_4, where E_2 and E_4 are respectively the Eisenstein series A006352 and A004009.
%H A280024 Seiichi Manyama, <a href="/A280024/b280024.txt">Table of n, a(n) for n = 0..1000</a>
%t A280024 terms = 19;
%t A280024 E2[x_] = 1 - 24*Sum[k*x^k/(1 - x^k), {k, 1, terms}];
%t A280024 E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms}];
%t A280024 E2[x]^4*E4[x] + O[x]^terms // CoefficientList[#, x]& (* _Jean-François Alcover_, Feb 27 2018 *)
%Y A280024 Cf. A282019 (E_2*E_4), A282208 (E_2^2*E_4), A282586 (E_2^3*E_4), this sequence (E_2^4*E_4).
%K A280024 sign
%O A280024 0,2
%A A280024 _Seiichi Manyama_, Feb 22 2017