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Search: id:A017710
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| A017710 |
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Denominator of sum of -23 th powers of divisors of n. |
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+0
2
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| 1, 8388608, 94143178827, 70368744177664, 11920928955078125, 65810851921133568, 27368747340080916343, 590295810358705651712, 8862938119652501095929, 50000000000000000000000, 895430243255237372246531
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OFFSET
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1,2
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COMMENT
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Sum_{d|n} 1/d^k is equal to sigma_k(n)/n^k. So sequences A017665-A017712 also give the numerators and denominators of sigma_k(n)/n^k for k = 1..24. The power sums sigma_k(n) are in sequences A000203 (k=1), A001157-A001160 (k=2,3,4,5), A013954-A013972 for k = 6,7,...,24. - comment from Ahmed Fares (ahmedfares(AT)my-deja.com), Apr 05 2001.
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CROSSREFS
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Cf. A017709.
Sequence in context: A098809 A011573 A022539 this_sequence A010811 A017709 A013971
Adjacent sequences: A017707 A017708 A017709 this_sequence A017711 A017712 A017713
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KEYWORD
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nonn,frac
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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