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%I #4 Sep 25 2017 07:13:39
%S 720,546,374,475,2001,2294,410,903,2491,1342,4602,4891,5467,40290,
%T 14774,8827,28785,22454,24182,8349,425,4826,107682,20155,21307,142242,
%U 49910,27547,86673,12670,13246,108273,37627,81590,36366,6541,47515,306402,105782,11327
%N a(n) = numerator of constant lambda(n) involved in a recurrence for the Atkin polynomials A_k(j).
%H M. Kaneko and D. Zagier, <a href="http://www2.math.kyushu-u.ac.jp/~mkaneko/papers/atkin.pdf">Supersingular j-invariants, hypergeometric series and Atkin's orthogonal polynomials</a>, pp. 97-126 of D. A. Buell and J. T. Teitelbaum, eds., Computational Perspectives on Number Theory, Amer. Math. Soc., 1998
%F For formula see Maple code.
%e 720, 546, 374, 475, 2001/5, 2294/5, 410, 903/2, 2491/6, 1342/3, 4602/11, 4891/11, ...
%p lambda:=proc(n) if n=1 then 720 else 12*(6+(-1)^n/(n-1))*(6+(-1)^n/n); fi; end;
%Y Cf. A145227.
%K nonn,frac
%O 1,1
%A _N. J. A. Sloane_, Feb 28 2009
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