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 A165761 #4 Jul 14 2012 11:32:31 %S A165761 1,14,36,68,237,263,709,1111,1520,2350,3605,7437,11325,13921,28337, %T A165761 42896,57483,85499,94206,108922,145872,190311,286903,383819,578215, %U A165761 668153,773158 %N A165761 Indices of records in A165633. %C A165761 A165632(a(n))=A165762(n) are areas for which there are more %H A165761 Project Euler, <a href="http://projecteuler.net/index.php?section=problems&id=256">Problem 256: Tatami-Free Rooms</a>, Sept. 2009. %K A165761 nonn %O A165761 1,2 %A A165761 _M. F. Hasler_, Sep 26 2009