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 A171004 #33 Aug 06 2014 16:10:20 %S A171004 1119,1129,1139,1149,1159,1169,1179,1189,1191,1192,1193,1194,1195, %T A171004 1196,1197,1198,1199,1219,1319,1419,1519,1619,1719,1819,1911,1912, %U A171004 1913,1914,1915,1916,1917,1918,1919,2191,2229,2239,2249,2259,2269,2279,2289,2292,2293,2294,2295,2296,2297,2298,2299,2329,2429,2529,2629,2729,2829,2911,2922,2923,2924,2925,2926,2927,2928 %N A171004 Numbers which are the lunar product of lunar primes in more than one way. %H A171004 David Applegate, <a href="/A171004/b171004.txt">Table of n, a(n) for n = 1..6679</a> %H A171004 David Applegate, <a href="/A171004/a171004_3.txt">Factorizations of all numbers in the b-file</a> %H A171004 David Applegate, <a href="/A171004/a171004_4.txt">Factorizations of all 9-ish numbers with <= 5 digits into products of lunar primes</a> %H A171004 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 A171004 <a href="/index/Di#dismal">Index entries for sequences related to dismal (or lunar) arithmetic</a> %e A171004 1119 = 19*109 = 19*19*19. %e A171004 1129 = 19*129 = 29*109 = 19*19*29. %Y A171004 Cf. A087097, A133626, A169977. %K A171004 nonn,base %O A171004 1,1 %A A171004 _N. J. A. Sloane_, Sep 01 2010