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A044558 Numbers n such that string 5,4 occurs in the base 7 representation of n but not of n+1. 0

%I

%S 39,88,137,186,235,279,284,333,382,431,480,529,578,622,627,676,725,

%T 774,823,872,921,965,970,1019,1068,1117,1166,1215,1264,1308,1313,1362,

%U 1411,1460,1509,1558,1607,1651,1656,1705,1754,1803

%N Numbers n such that string 5,4 occurs in the base 7 representation of n but not of n+1.

%t Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n,7],{5,4}]>0,1,0],{n,2000}],{1,0}]][[1]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* _Harvey P. Dale_, Jun 05 2016 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified October 21 09:09 EDT 2020. Contains 337911 sequences. (Running on oeis4.)