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