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%I #5 Mar 30 2012 17:20:44
%S 1,2,12,13,14,15,16,17,63,64,65,66,67,68,69,70,71,72,73,74,75,76,77,
%T 78,79,80,999,1000,1001,1002,1003,1004,1005,1006,1007,1008,1009,1010,
%U 1011,1012,1013,1014,1015,1016,1017,1018,1019,1020,1021,1022,1023
%N Clog sequence in base 3. Right to left concatenation of n,int(log_3(n)),int(log_3(int(log_3(n)))),... in base 3.
%K nonn,base,easy
%O 1,2
%A _Olivier Gérard_
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