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Search: id:A063035
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| A063035 |
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Number of integers containing a square factor less than or equal to 10^n. |
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+0
3
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| 4, 39, 392, 3917, 39206, 392074, 3920709, 39207306, 392072876, 3920729058, 39207289720, 392072897726, 3920728981706, 39207289814053, 392072898145897, 3920728981459595
(list; graph; listen)
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OFFSET
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1,1
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PROGRAM
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(PARI) { default(realprecision, 50); for (n=1, 100, t=10^n - 1; a=10^n - sum(k=1, sqrt(t), moebius(k)*floor(t/k^2)); write("b063035.txt", n, " ", a) ) } [From Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 16 2009]
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CROSSREFS
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a(n) + A053462(n) = 10^n.
Sequence in context: A112460 A059945 A093851 this_sequence A123618 A046449 A068187
Adjacent sequences: A063032 A063033 A063034 this_sequence A063036 A063037 A063038
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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), Aug 02 2001
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EXTENSIONS
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More terms from Harry J. Smith (hjsmithh(AT)sbcglobal.net), Aug 16 2009
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