%I #6 Mar 09 2015 09:35:19
%S 13,25,43,49,53,71,103,113,125,137,141,145,149,155,157,159,165,193,
%T 199,219,239,255,267,275,287,295,297,307,313,317,333,347,349,381,383,
%U 407,417,423,429,431,437,453,457,497,499,509,511,521,537,541,555,557
%N Exactly 1 digit from {1,2,3,4,5,6,7,8,9} can precede a(n) to form a lucky number.
%e If a(n) = 333 then we find only '7'333 to be a lucky number.
%Y Cf. A000959.
%K nonn,base,less
%O 1,1
%A _Patrick De Geest_, May 15 1998
