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 A158861 #9 Jul 22 2014 22:08:57 %S A158861 2999,8999,101999,164999,179999,230999,272999,293999,326999,389999, %T A158861 410999,419999,443999,512999,524999,536999,659999,662999,773999, %U A158861 788999,794999,800999,818999,890999,920999,932999,989999,1028999,1058999,1136999,1187999,1238999 %N A158861 The lesser of twin prime pairs with each prime in a different millennia. %C A158861 The sequence is conjecturally infinite; note that terms ending 9999 straddle ten millennia. %Y A158861 Cf. A060229, A158277. %K A158861 nonn %O A158861 1,1 %A A158861 _Ki Punches_, Mar 28 2009 %E A158861 Corrected and extended by _Ray Chandler_ and _R. J. Mathar_, Apr 03 2009