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A093598
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Denominator of Sum_{k in A026424} [1/k^(2n)].
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1
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20, 1260, 225225, 137837700, 49104680625, 3277766894527125, 61902833536293750, 396627372338514817500, 7794458831536571762427234375, 2289686345687357378035370971875, 146008313505589229344287856968750
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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LINKS
| Eric Weisstein's World of Mathematics, Prime Sums
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FORMULA
| Denominator of (Zeta[2n]^2-Zeta[4n])/(2Zeta[2n]).
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EXAMPLE
| Pi^2/20, Pi^4/1260, (4*Pi^6)/225225, (59*Pi^8)/137837700, ...
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CROSSREFS
| Cf. A026424, A093597.
Sequence in context: A158912 A036067 A001451 * A174581 A153469 A160253
Adjacent sequences: A093595 A093596 A093597 * A093599 A093600 A093601
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KEYWORD
| nonn,frac
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com), Apr 03, 2004
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