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 A191753 #17 Sep 14 2017 15:34:12 %S A191753 1000,1100,1110,1111,10100,11112,11120,11121,11122,11200,11210,11211, %T A191753 11220,11221,11222,12000,12100,12110,12111,12200,12210,12211,12220, %U A191753 12221,12222,20000,21000,21100,21110,21111,22000,22100,22110,22111,22200,22210,22211,22220,22221,22222 %N A191753 Numbers of rank 11 in the poset of lunar numbers. %H A191753 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 A191753 D. Applegate, M. LeBrun, N. J. A. Sloane, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL14/Sloane/carry2.html">Dismal Arithmetic</a>, J. Int. Seq. 14 (2011) # 11.9.8. %H A191753 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %Y A191753 Cf. A161813, A144171, A144175, A171786, A171787, A171788, A171789, A171794, A171795, A171796, A191752, A191753. %K A191753 nonn,base %O A191753 1,1 %A A191753 _N. J. A. Sloane_, Jun 15 2011