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 A186295 #10 Jul 16 2013 03:05:34 %S A186295 15,39,71,87,95,111,135,191,231,239,255,279,311,335,351,399,407,431, %T A186295 447,455,519,567,575,591,599,615,639,671,759,767,807,855,879,927,935, %U A186295 951,975,1007,1031,1047,1095,1127,1151,1191,1199,1215 %N A186295 A007519(n)-2. %F A186295 a(n) = 2*A186294(n) - 3. - _Michel Marcus_, Jul 16 2013 %o A186295 (PARI) isok(n) = isprime(p=n+2) && (p % 8 == 1) \\ _Michel Marcus_, Jul 16 2013 %K A186295 nonn %O A186295 1,1 %A A186295 _Marco Matosic_, Feb 17 2011