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 A171120 #14 Aug 06 2014 17:09:56 %S A171120 0,1,2,3,4,5,6,7,8,9,100,101,102,103,104,105,106,107,108,109,111,112, %T A171120 113,114,115,116,117,118,119,200,201,202,203,204,205,206,207,208,209, %U A171120 211,212,213,214,215,216,217,218,219,222,223,224,225,226 %N A171120 Numbers that are the lunar sums of two lunar squares. %H A171120 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 A171120 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %Y A171120 Cf. A087019. %K A171120 nonn,base %O A171120 1,3 %A A171120 _N. J. A. Sloane_, Sep 28 2010