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 A166576 #3 Mar 30 2012 18:52:53 %S A166576 71,101,151,181,229,233,239,241,269,311,349,373,409,419,433,439,491, %T A166576 571,593,599,601,607,643,647,653,659,727,823,827,857,941,947,1021, %U A166576 1031,1051,1061,1063,1091,1103,1301,1373,1427,1429,1447,1451,1489,1553,1559,1567 %N A166576 Intersection of A104272 and A166252. %C A166576 Each Ramanujan prime A104272 larger than 2 is either a central prime (A166272) or a right prime (A166307). %K A166576 nonn %O A166576 1,1 %A A166576 _Vladimir Shevelev_, Oct 17 2009 %E A166576 Extended beyond 571 by _R. J. Mathar_, Oct 21 2009