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 A060192 #3 Mar 30 2012 16:49:04 %S A060192 3,5,13,17,29,31,43,47,61,67,79,83,101,103,113,127,139,149,163,167, %T A060192 181,191,199,211,229,233,251,257,271,277,293,307,317,331,349,353,373, %U A060192 379,397,401,421,431,443,449,463,467,491,499,521,523,557 %N A060192 Union_i p(4i+2), p(4i+3), where p(k) = k-th prime. %Y A060192 Cf. A060191, A060193, A060194. %K A060192 nonn %O A060192 0,1 %A A060192 _N. J. A. Sloane_, Mar 21 2001