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Search: id:A145226
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| A145226 |
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a(n) = numerator of constant lambda(n) involved in a recurrence for the Atkin polynomials A_k(j). |
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+0
2
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| 720, 546, 374, 475, 2001, 2294, 410, 903, 2491, 1342, 4602, 4891, 5467, 40290, 14774, 8827, 28785, 22454, 24182, 8349, 425, 4826, 107682, 20155, 21307, 142242, 49910, 27547, 86673, 12670, 13246, 108273, 37627, 81590, 36366, 6541, 47515, 306402, 105782, 11327
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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M. Kaneko and D. Zagier, Supersingular j-invariants, hypergeometric series and Atkin's orthogonal polynomials, pp. 97-126 of D. A. Buell and J. T. Teitelbaum, eds., Computational Perspectives on Number Theory, Amer. Math. Soc., 1998.
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FORMULA
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For formula see Maple code.
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EXAMPLE
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720, 546, 374, 475, 2001/5, 2294/5, 410, 903/2, 2491/6, 1342/3, 4602/11, 4891/11, ...
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MAPLE
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lambda:=proc(n) if n=1 then 720 else 12*(6+(-1)^n/(n-1))*(6+(-1)^n/n); fi; end;
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CROSSREFS
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Cf. A145227.
Sequence in context: A064980 A101997 A139195 this_sequence A056467 A056457 A068351
Adjacent sequences: A145223 A145224 A145225 this_sequence A145227 A145228 A145229
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KEYWORD
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nonn,frac
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com), Feb 28 2009
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