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 A162801 #2 Mar 30 2012 17:34:01 %S A162801 0,4,9,15,21,30,39,45,56,64,72,81,93,102,108,120,134,144,154,165,176, %T A162801 186,195,205,225,231,240,254,266,274,282,300,312,324,342,351,363,376, %U A162801 386,399,414,426,436,446,459,465,483,495,506,522,544,560,570,582,596 %N A162801 Bisection of A162800. %C A162801 Essentially the same as A058296. %Y A162801 Cf. A058296, A079424, A162345, A162802. %K A162801 easy,nonn %O A162801 1,2 %A A162801 _Omar E. Pol_, Jul 16 2009