%I #4 Mar 31 2012 13:21:13
%S 4,5,20,21,68,69,84,85,4100,4101,4116,4117,4164,4165,4180,4181,16388,
%T 16389,16404,16405,16452,16453,16468,16469,20484,20485,20500,20501,
%U 20548,20549,20564,20565,65540,65541,65556,65557,65604,65605,65620
%N A106486-encodings of combinatorial games with value 2.
%C These are codes for games which belong to the same equivalence class as the game {1|} (i.e. the game 2).
%H A. Karttunen, <a href="/A126000/a126000.scm.txt">Scheme-program for computing this sequence.</a>
%e Game {1|} is encoded as 2^(2*1) = 4, thus 4 is the first term of this sequence. Also 5 belongs into this sequence, as it encodes game {0,1|}, where, because the option 1 dominates the option 0 on the left side, the zero can be deleted, resulting the same game {1|}.
%Y Row 5 of A126000.
%K nonn
%O 1,1
%A _Antti Karttunen_, Dec 18 2006