%I #5 Mar 30 2012 18:56:44
%S 6,22,27,38,54,70,86,91,111,118,134,150,155,166,182,198,214,219,230,
%T 246,262,278,283,294,310,326,342,347,367,374,447,454,470,475,486,502,
%U 518,534,539,550,566,582,598,603,623,630,646,662
%N Numbers n such that string 1,2 occurs in the base 4 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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