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 A171143 #10 Aug 06 2014 16:12:50 %S A171143 13,20,27,34,41,42,43,44,45,46,47,48,55,104,111,153,160,167,202,209, %T A171143 216,223,251,258,265,272,279,295,296,297,298,299,300,303,304,305,306, %U A171143 307,311,312,313,314,319,320,321,327,328,335,349,356,363,370,377,384,386 %N A171143 Primes in lunar arithmetic in base 7 written in base 10. %H A171143 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 A171143 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %K A171143 nonn,base %O A171143 1,1 %A A171143 _N. J. A. Sloane_, Sep 30 2010