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%I #7 Jun 02 2017 17:31:38
%S 39,75,111,147,183,219,234,255,291,327,363,399,435,450,471,507,543,
%T 579,615,651,666,687,723,759,795,831,867,882,903,939,975,1011,1047,
%U 1083,1098,1119,1155,1191,1227,1263,1299,1314,1335
%N Numbers n such that string 0,3 occurs in the base 6 representation of n but not of n-1.
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,6],{0,3}]>0,1,0],{n,1500}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jun 02 2017 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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