A104170 Number of Smith numbers below 10^n.

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

Offset

1,2

References

S. S. Gupta, Smith Numbers, Mathematical Spectrum, 37 (2004/5), 27-29.

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 A371406

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