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Search: id:A034496
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| A034496 |
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Sum of n-th powers of divisors of 8. |
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+0
3
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| 4, 15, 85, 585, 4369, 33825, 266305, 2113665, 16843009, 134480385, 1074791425, 8594130945, 68736258049, 549822930945, 4398314962945, 35185445863425, 281479271743489, 2251816993685505, 18014467229220865
(list; graph; listen)
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OFFSET
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0,1
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COMMENT
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Conjecture: No primes in this sequence (checked for first 10000 terms). [From Artur Jasinski (grafix(AT)csl.pl), Sep 23 2008]
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PROGRAM
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(Other) sage: [sigma(8, n)for n in xrange(0, 19)] # [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Jun 04 2009]
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CROSSREFS
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Sequence in context: A151379 A130679 A107874 this_sequence A079155 A076900 A081011
Adjacent sequences: A034493 A034494 A034495 this_sequence A034497 A034498 A034499
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KEYWORD
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nonn
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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