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%I #5 Mar 30 2012 18:56:44
%S 3,12,21,39,48,57,66,75,120,129,138,147,156,165,174,183,201,210,219,
%T 228,237,363,372,381,390,399,408,417,426,444,453,462,471,480,489,498,
%U 507,525,534,543,552,561,606,615,624,633,642,651
%N Numbers n such that string 1,0 occurs in the base 3 representation of n but not of n+1.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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