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 A084666 #15 Aug 06 2014 17:14:12 %S A084666 19,29,59,79,89,97,109,409,419,439,509,619,659,709,719,739,769,809, %T A084666 829,839,859,907,919,929,937,947,967,1009,1019,1039,1049,1069,1091, %U A084666 1093,1097,1109,1409,1609,1709,1901,1907,2029,2039,2069,2089,2099,2129,2179,2309 %N A084666 Lunar primes that are also rational primes. %H A084666 D. Applegate, <a href="/A087061/a087061.txt">C program for lunar arithmetic and number theory</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing] %H A084666 D. Applegate, M. LeBrun and N. J. A. Sloane, <a href="http://arxiv.org/abs/1107.1130">Dismal Arithmetic</a> [Note: we have now changed the name from "dismal arithmetic" to "lunar arithmetic" - the old name was too depressing] %H A084666 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %Y A084666 Intersection of A000040 and A087097. %K A084666 nonn %O A084666 1,1 %A A084666 _N. J. A. Sloane_, Nov 08 2003