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 A125921 #3 Oct 12 2013 15:17:34 %S A125921 1,2,0,1,2,0,2,1,2,3,1,2,4,5,3,0,3,5,1,2,1,3,2,1,2,1,2,5,6,2,1,5,4,0, %T A125921 2,0,6,2,1,2,8,1,2,0,5,1,6,3,1,2,4,5,3,0,3,5,1,2,1,6,2,1,3,4,8,3,6,2, %U A125921 1,5,4,0,3,0,6,8,1,2,8,1,2,0,5,1,6,3,1,9,4,5,4,10,3,5,9,4,1,12,2 %N A125921 Sprague-Grundy values for octal game .314. %D A125921 E. R. Berlekamp, J. H. Conway and R. K. Guy, Winning Ways, Academic Press, NY, 2 vols., 1982; see Chapter 4, p. 104. %K A125921 nonn %O A125921 1,2 %A A125921 _Richard Sabey_, Jan 24 2007