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 A125994 #4 Mar 31 2012 13:21:13
%S A125994 3,11,19,27,515,523,531,539,2051,2059,2067,2075,2563,2571,2579,2587,
%T A125994 8195,8203,8211,8219,8707,8715,8723,8731,10243,10251,10259,10267,
%U A125994 10755,10763,10771,10779,32771,32779,32787,32795,33283,33291,33299
%N A125994 A106486-encodings of combinatorial games equivalent to game {0|0}.
%C A125994 These are codes for games which belong to the same equivalence class as the game {0|0} (i.e. game *).
%H A125994 A. Karttunen, <a href="/A126000/a126000.scm.txt">Scheme-program for computing this sequence.</a>
%e A125994 Game {0|0} is encoded as 2^(2*0) + 2^(1+2*0) = 3, thus 3 is the first term of this sequence. However, 11 also belongs into this sequence, as it encodes game {0|0,1}, where, because the option 0 dominates the option 1 on the right hand side, the latter can be deleted, resulting the same game {0|0}.
%Y A125994 Row 4 of A126000. Subset of A126003.
%K A125994 nonn
%O A125994 1,1
%A A125994 _Antti Karttunen_, Dec 18 2006