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 A282208 #18 Feb 26 2018 17:23:10
%S A282208 1,192,-8928,9984,1420896,11433600,53760384,187233792,533725920,
%T A282208 1327018944,2953851840,6060858624,11611915392,21030301824,36387585792,
%U A282208 60357358080,97020376032,150755202432,229107724704,338493223680,492378465600,698632525824,980953593984
%N A282208 Coefficients in q-expansion of E_2^2*E_4, where E_2 and E_4 are respectively the Eisenstein series A006352 and A004009.
%H A282208 Seiichi Manyama, <a href="/A282208/b282208.txt">Table of n, a(n) for n = 0..1000</a>
%t A282208 terms = 23;
%t A282208 E2[x_] = 1 - 24*Sum[k*x^k/(1 - x^k), {k, 1, terms}];
%t A282208 E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms}];
%t A282208 E2[x]^2*E4[x] + O[x]^terms // CoefficientList[#, x]& (* _Jean-François Alcover_, Feb 26 2018 *)
%Y A282208 Cf. A006352 (E_2), A004009 (E_4), A281374 (E_2^2), A282019 (E_2*E_4), A008410 (E_4^2 = E_8), A282018 (E_2^3), this sequence (E_2^2*E_4), A282101 (E_2*E_4^2), A008411 (E_4^3).
%K A282208 sign
%O A282208 0,2
%A A282208 _Seiichi Manyama_, Feb 09 2017