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A104170 Number of Smith numbers below 10^n. 1

%I

%S 1,6,49,376,3294,29928,278411,2632758,25154060,241882509,2335807857,

%T 22635291815,219935518608

%N Number of Smith numbers below 10^n.

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

%H S. S. Gupta, <a href="http://www.shyamsundergupta.com/smith.htm">Smith Numbers</a>.

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

%Y Cf. A006753.

%K nonn,base,hard,more

%O 1,2

%A _Shyam Sunder Gupta_, Mar 10 2005

%E a(11), a(12) from _Max Alekseyev_, Jan 20 2010

%E a(13) from _Max Alekseyev_, Oct 01 2010

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Last modified August 1 03:52 EDT 2021. Contains 346384 sequences. (Running on oeis4.)