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 A144872 #2 Mar 30 2012 17:37:29 %S A144872 1,1,3,8,5,72,7,32,27,400,11,864,13,784,675,128,17,2592,19,1600,1323, %T A144872 3872,23,3456,125,5408,243,3136,29,324000,31,512,9801,18496,6125, %U A144872 31104,37,23104,13689,32000,41,254016,43,15488,30375,33856,47 %N A144872 Periods of the rows of A144871. %Y A144872 Cf. A144871, A007318, A133900. %K A144872 nonn %O A144872 1,3 %A A144872 _Alois P. Heinz_, Sep 23 2008