Search: a145235 -id:a145235
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A145295
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a(n) = denominator of Atkin polynomials A_n(j) evaluated at j = 1728.
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+10
5
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1, 1, 5, 1, 1, 1, 13, 5, 17, 17, 1, 1, 25, 5, 29, 29, 29, 5, 37, 481, 1517, 41, 205, 41, 1, 17, 901, 265, 53, 53, 3233, 61, 3965, 61, 61, 1, 73, 1825, 365, 73, 73, 73, 85, 493, 2581, 33553, 89, 445, 8633, 8633, 871933, 871933, 48985, 9797, 1067873, 39511301, 46028629, 230143145
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OFFSET
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1,3
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LINKS
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FORMULA
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See Maple code for formula.
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EXAMPLE
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1008, 421344, 901254816/5, 77507914176, 33392993024160, 14400272882673216, 80771130598914068544/13, ...
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MAPLE
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af:=proc(a, n) mul(a+i, i=0..n-1); end; A1728:=n->-12^(3*n+1)*af(-1/12, n)*af(7/12, n)/(2*n-1)!;
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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