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 A152540 #4 Mar 30 2012 18:40:08 %S A152540 7,19,37,59,83,113,181,223,269,317,683,757,1367,3533,3847,5051,6011, %T A152540 6833,8609,8849,9091,10597,10859,11393,11941,13963,14561,15797,17737, %U A152540 18743,20479,21559,23039,23417,24571,27773,52631,53189,55457,56611 %N A152540 Primes p of the form A152539(n) + 1. %Y A152540 Cf. A152539. %K A152540 easy,nonn %O A152540 1,1 %A A152540 _Giovanni Teofilatto_, Dec 07 2008 %E A152540 Extended beyond a(10) by _R. J. Mathar_, Jan 30 2010