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Search: id:A083377
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| A083377 |
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a(n) = the largest integer whose square has n digits and first digit 1. |
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+0
4
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| 1, 4, 14, 44, 141, 447, 1414, 4472, 14142, 44721, 141421, 447213, 1414213, 4472135, 14142135, 44721359, 141421356, 447213595, 1414213562, 4472135954
(list; graph; listen)
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OFFSET
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1,2
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LINKS
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W. Huerlimann, Integer powers and Benford's law, International Journal of Pure and Applied Mathematics, vol. 11, no. 1, pp. 39-46, 2004.
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FORMULA
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a(n)=floor(sqrt(10^n/5))
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CROSSREFS
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Cf. A049416, A083377-A083380.
Sequence in context: A097894 A065835 A097137 this_sequence A047115 A125068 A108765
Adjacent sequences: A083374 A083375 A083376 this_sequence A083378 A083379 A083380
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KEYWORD
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base,easy,nonn,new
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AUTHOR
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Werner S. Huerlimann [H\"{u}rlimann] (whurlimann(AT)bluewin.ch), Jun 05 2003
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EXTENSIONS
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Edited by Don Reble (djr(AT)nk.ca), Nov 05 2005
Reference fixed by Charles R Greathouse IV (charles.greathouse(AT)case.edu), Oct 30 2009
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