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%I #4 Jun 11 2014 17:24:22
%S 1,7,40,240,1448,8630,53545,371845,3267453,36428242,442762543,
%T 5217693527,57321559329,586532407659,5666269188709,52728701479194
%N Number of n-digit numbers with nonzero multiplicative digital root 3.
%D William Mayne, sci.math, Jun 15 1991
%F # { i : 10^(n-1) < i < 10^n and A051802(i)=3 }
%Y Cf. A051802, A051805, A051823.
%K nonn,base,hard
%O 1,2
%A _Dan Hoey_, Dec 09 1999
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