

A104170


Number of Smith numbers below 10^n.


1



1, 6, 49, 376, 3294, 29928, 278411, 2632758, 25154060, 241882509, 2335807857, 22635291815, 219935518608
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OFFSET

1,2


REFERENCES

S. S. Gupta, Smith Numbers, Mathematical Spectrum, 37 (2004/5), 2729.


LINKS

Table of n, a(n) for n=1..13.
S. S. Gupta, Smith Numbers.


EXAMPLE

a(4)=376 because number of Smith number below 10^4 is 376.


CROSSREFS

Cf. A006753.
Sequence in context: A097299 A283226 A292124 * A098306 A055847 A143165
Adjacent sequences: A104167 A104168 A104169 * A104171 A104172 A104173


KEYWORD

nonn,base,hard,more


AUTHOR

Shyam Sunder Gupta, Mar 10 2005


EXTENSIONS

a(11), a(12) from Max Alekseyev, Jan 20 2010
a(13) from Max Alekseyev, Oct 01 2010


STATUS

approved



