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%I #9 Oct 02 2013 15:47:24
%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