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 A290009 Coefficients in expansion of 691*E_4*E_8*E_12. 3
 691, 563040, 305307360, 131729109120, 34085393629920, 4587384326495040, 302027782271806080, 10484303481804821760, 226150164335242994400, 3395290157453914541280, 38308806132696980919360, 343030311387007824977280, 2537869275676057371269760 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,1 LINKS Seiichi Manyama, Table of n, a(n) for n = 0..1000 FORMULA G.f.: 691*E_4^3*E_12. MATHEMATICA terms = 13; E4[x_] = 1 + 240*Sum[k^3*x^k/(1 - x^k), {k, 1, terms}]; E12[x_] = 1 + (65520/691)*Sum[k^11*x^k/(1 - x^k), {k, 1, terms}]; 691*E4[x]^3*E12[x] + O[x]^terms // CoefficientList[#, x]& (* Jean-François Alcover, Feb 26 2018 *) CROSSREFS Cf. A004009 (E_4), A008410 (E_8), A008411 (E_4^3), A029828 (691*E_12). Cf. A290010. Sequence in context: A288837 A290049 A288989 * A290010 A037149 A196894 Adjacent sequences:  A290006 A290007 A290008 * A290010 A290011 A290012 KEYWORD nonn AUTHOR Seiichi Manyama, Jul 17 2017 STATUS approved

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Last modified February 29 05:25 EST 2020. Contains 332353 sequences. (Running on oeis4.)