%I #12 Jun 29 2013 13:55:36
%S 185,247,253,295,329,355,405,425,453,471,533,539,565,583,595,671,675,
%T 689,703,755,781,785,815,841,855,925,989,1037,1075,1099,1113,1121,
%U 1159,1189,1207,1219,1269,1287,1305,1329,1341,1403,1413,1441,1473,1521,1541
%N Composite numbers whose binary representation reads as decimal prime.
%H Vincenzo Librandi, <a href="/A156059/b156059.txt">Table of n, a(n) for n = 1..1000</a>
%e 185 is composite & 10111001 is prime.
%e 313 is not in the sequence as it is prime in base 10.
%t Select[Range[2900], ! PrimeQ[#]&&PrimeQ[FromDigits[IntegerDigits[#, 2]]]&] (* _Vincenzo Librandi_, Apr 18 2013 *)
%Y Cf. A065720, A007088, A036952.
%K nonn,base
%O 1,1
%A _Gerald Hillier_, Feb 03 2009
%E More terms from _R. J. Mathar_, Feb 10 2009
%E Edited by _N. J. A. Sloane_, Mar 17 2010