Search: id:A045489
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%I A045489
%S A045489 1,3,51,204,681,1956,5135,12360,28119,60572,125682,251040,487426,
%T A045489 920568,1699611,3070508,5445510,9490116,16283793,27537708,45959775,
%U A045489 75760640,123471327,199081632,317814988
%N A045489 McKay-Thompson series of class 7A for Monster.
%D A045489 J. H. Conway and S. P. Norton, Monstrous Moonshine, Bull. Lond. Math. 
               Soc. 11 (1979) 308-339.
%D A045489 N. D. Elkies, Elliptic and modular curves..., in AMS/IP Studies in Advanced 
               Math., 7 (1998), 21-76, esp. p. 66.
%D A045489 D. Ford, J. McKay and S. P. Norton, More on replicable functions, Commun. 
               Algebra 22, No. 13, 5175-5193 (1994).
%D A045489 J. McKay and H. Strauss, The q-series of monstrous moonshine and the 
               decomposition of the head characters. Comm. Algebra 18 (1990), no. 
               1, 253-278.
%H A045489 <a href="Sindx_Mat.html#McKay_Thompson">Index entries for McKay-Thompson 
               series for Monster simple group</a>
%F A045489 Expansion of (h+7)^2/h, where h = (eta(q)/eta(q^7))^4.
%e A045489 q^(-1)+3+51*q+204*q^2+681*q^3+O(q^4).
%Y A045489 Essentially same as A007264 and A030183.
%Y A045489 Sequence in context: A071094 A144987 A062216 this_sequence A145242 A075869 
               A126685
%Y A045489 Adjacent sequences: A045486 A045487 A045488 this_sequence A045490 A045491 
               A045492
%K A045489 nonn
%O A045489 -1,2
%A A045489 N. J. A. Sloane (njas(AT)research.att.com).

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