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A104170
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Number of Smith numbers below 10^n.
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1
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1, 6, 49, 376, 3294, 29928, 278411, 2632758, 25154060, 241882509, 2335807857, 22635291815, 219935518608
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history;
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OFFSET
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1,2
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REFERENCES
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S. S. Gupta, Smith Numbers, Mathematical Spectrum, 37 (2004/5), 27-29.
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LINKS
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Table of n, a(n) for n=1..13.
S. S. Gupta, Smith Numbers.
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EXAMPLE
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a(4)=376 because number of Smith number below 10^4 is 376.
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CROSSREFS
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Cf. A006753.
Sequence in context: A048357 A027766 A097299 * A098306 A055847 A143165
Adjacent sequences: A104167 A104168 A104169 * A104171 A104172 A104173
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KEYWORD
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nonn,base,hard,more
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AUTHOR
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Shyam Sunder Gupta (guptass(AT)rediffmail.com), Mar 10 2005
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EXTENSIONS
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a(11), a(12) from Max Alekseyev, Jan 20 2010
a(13) from Max Alekseyev, Oct 01 2010
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STATUS
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approved
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