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Search: id:A057494
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| A057494 |
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Sum_{k = 1 .. 10^n} d(k) where d(n) = number of divisors of n (A000005). |
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+0
7
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| 1, 27, 482, 7069, 93668, 1166750, 13970034, 162725364, 1857511568, 20877697634
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OFFSET
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0,2
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COMMENT
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k = s = 0; Do[ While[ k < 10^n, k++; s = s + DivisorSigma[ 0, k ] ]; Print[s], {n, 0, 8} ]
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FORMULA
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a(n) = A006218(10^n) [From Max Alekseyev (maxale(AT)gmail.com), May 10 2009]
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CROSSREFS
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Cf. A006218.
Cf. A006218, A050226, A085567, A085829, A085831.
Sequence in context: A026543 A028046 A109821 this_sequence A024439 A026006 A024346
Adjacent sequences: A057491 A057492 A057493 this_sequence A057495 A057496 A057497
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KEYWORD
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nonn
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AUTHOR
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Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 21 2000
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