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Search: id:A136368
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| A136368 |
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Numerator of Sum[ (-1)^(k+1)*1/Prime[k]^2, {k,1,n} ] ]. |
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+0
7
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| 1, 5, 161, 6989, 889769, 145034861, 42816875729, 15196271678069, 8132911703794601, 6790008314246422541, 6567054920481119894801, 8950073675937467308565669, 15100141203716305943432625689
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OFFSET
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1,2
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FORMULA
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a(n) = Numerator[ Sum[ (-1)^(k+1)*1/Prime[k]^2, {k,1,n} ] ].
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MATHEMATICA
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Table[ Numerator[ Sum[ (-1)^(k+1)*1/Prime[k]^2, {k, 1, n} ] ], {n, 1, 20} ]
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CROSSREFS
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Cf. A136369, A136365, A136366, A024530, A136370, A136371.
Adjacent sequences: A136365 A136366 A136367 this_sequence A136369 A136370 A136371
Sequence in context: A009082 A088694 A085330 this_sequence A117068 A128068 A129995
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KEYWORD
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nonn
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AUTHOR
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Alexander Adamchuk (alex(AT)kolmogorov.com), Dec 27 2007
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