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 A125848 #7 Mar 31 2012 10:22:00 %S A125848 4,9,12,57,99,165,486,681,810,1854 %N A125848 Records in A063983. %Y A125848 Cf. A124742, A063983, A125019. %K A125848 nonn %O A125848 1,1 %A A125848 _Artur Jasinski_, Nov 16 2006 %E A125848 Corrected and extended by _R. J. Mathar_, Nov 29 2006 %E A125848 Edited by _N. J. A. Sloane_, Jul 03 2008