%I #4 Mar 30 2012 18:56:49
%S 10,20,30,40,50,60,70,80,90,92,93,94,95,96,97,98,180,181,183,184,185,
%T 186,187,188,270,271,272,274,275,276,277,278,360,361,362,363,365,366,
%U 367,368,450,451,452,453,454,456,457,458,540
%N Base 9 run lengths alternate: even, odd, even,...
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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