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Search: id:A117579
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| A117579 |
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Numerator of Sum[i=1..n] 1/(p(i)^p(i)), p(i) = i-th prime. |
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+0
8
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| 1, 31, 96983, 79870008269, 22787845491220720044859, 22787845491220720044859, 6901871132161346809864777612017764827, 5709505682874900155174610004469973097336266239002423739879
(list; graph; listen)
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OFFSET
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1,2
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FORMULA
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a(n) = Numerator of Sum[i=1..n] 1/(p(i)^p(i)). a(n) = Numerator of Sum[i=1..n] 1/(A000040(i)^A000040(i)). a(n) = Numerator of Sum[i=1..n] 1/A051674(i).
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EXAMPLE
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1/4, 31/108, 96983/337500, 79870008269/277945762500, 22787845491220720044859/79301169838123235887500,
6901871132161346809864777612017764827/24018350267611933650627567399079537500
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CROSSREFS
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Denominators = A076265.
Cf. A000040, A051674.
Sequence in context: A161395 A086122 A033176 this_sequence A107122 A059113 A057839
Adjacent sequences: A117576 A117577 A117578 this_sequence A117580 A117581 A117582
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KEYWORD
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easy,frac,nonn
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AUTHOR
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Jonathan Vos Post (jvospost3(AT)gmail.com), Mar 29 2006
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