%I #5 Mar 30 2012 18:56:46
%S 100,200,300,400,500,600,700,800,900,1009,1100,1200,1300,1400,1500,
%T 1600,1700,1800,1900,2009,2100,2200,2300,2400,2500,2600,2700,2800,
%U 2900,3009,3100,3200,3300,3400,3500,3600,3700,3800
%N Numbers n such that string 0,0 occurs in the base 10 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_