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Search: id:A093597
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| 1, 1, 4, 59, 521, 872492, 415603, 67323341, 33484369708417, 249063001217323, 402233765088019, 2340564635396243082668, 1836709980831869650909, 7917057291763619291770993, 6790679763108188972468718224386027
(list; graph; listen)
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OFFSET
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1,3
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LINKS
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Eric Weisstein's World of Mathematics, Prime Sums
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FORMULA
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1/Pi^(2n) * numerator of (Zeta[2n]^2-Zeta[4n])/(2Zeta[2n]).
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EXAMPLE
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Pi^2/20, Pi^4/1260, (4*Pi^6)/225225, (59*Pi^8)/137837700, ...
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CROSSREFS
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Cf. A026424, A093598.
Sequence in context: A144992 A037066 A113251 this_sequence A126754 A026586 A058173
Adjacent sequences: A093594 A093595 A093596 this_sequence A093598 A093599 A093600
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KEYWORD
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nonn,frac
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AUTHOR
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Eric Weisstein (eric(AT)weisstein.com), Apr 03, 2004
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