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Numbers having, in base 6, (sum of even run lengths)=(sum of odd run lengths).
4

%I #5 Mar 30 2012 18:56:47

%S 217,218,219,220,221,223,230,237,244,251,253,254,255,256,257,264,265,

%T 267,268,269,270,271,272,274,275,276,277,278,279,281,282,283,284,285,

%U 286,288,295,300,301,303,304,305,309,316,323

%N Numbers having, in base 6, (sum of even run lengths)=(sum of odd run lengths).

%K nonn,base

%O 1,1

%A _Clark Kimberling_