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A027665
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a(n)/100000 gives log_10(n) to 5 places.
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1
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0, 30103, 47712, 60206, 69897, 77815, 84510, 90309, 95424, 100000, 104139, 107918, 111394, 114613, 117609, 120412, 123045, 125527, 127875, 130103, 132222, 134242, 136173, 138021, 139794, 141497, 143136, 144716, 146240
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| A tribute to 5-place logarithm tables which served many generations of students and technical people. - Michael Somos, Sep 21, 2002
a(10*n) = a(n) + 100000, virtually. [Reinhard Zumkeller, Nov 12 2011]
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LINKS
| Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
Eric Weisstein's World of Mathematics, Common Logarithm
Wikipedia, Common logarithm
Wikipedia, Tables of logarithms
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MAPLE
| lprint(round(evalf(100000*log(n)/log(10))));
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PROG
| (PARI) a(n)=if(n<1, 0, round(10^5*log(n)/log(10)))
(Haskell)
a027665 n = round $ 100000 * log (fromInteger n) / (log 10)
-- Reinhard Zumkeller, Nov 12 2011
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CROSSREFS
| Sequence in context: A031853 A066576 A104877 * A202598 A113286 A027687
Adjacent sequences: A027662 A027663 A027664 * A027666 A027667 A027668
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KEYWORD
| nonn,base
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AUTHOR
| N. J. A. Sloane (njas(AT)research.att.com).
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