%I #8 Mar 09 2015 09:35:19
%S 3,5,11,15,27,29,33,35,41,51,59,63,69,71,89,93,95,101,105,107,117,123,
%T 147,155,167,179,183,189,197,201,203,209,219,231,233,245,249,251,261,
%U 263,275,281,285,291,303,309,323,329,339,357,365,369,387,389,395
%N Digit '1' concatenated with a(n) is a lucky number.
%Y Cf. A000959.
%K nonn,base,less
%O 1,1
%A _Patrick De Geest_, May 15 1998