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A044090 Numbers n such that string 2,3 occurs in the base 5 representation of n but not of n-1. 0

%I

%S 13,38,63,65,88,113,138,163,188,190,213,238,263,288,313,315,325,363,

%T 388,413,438,440,463,488,513,538,563,565,588,613,638,663,688,690,713,

%U 738,763,788,813,815,838,863,888,913,938,940,950

%N Numbers n such that string 2,3 occurs in the base 5 representation of n but not of n-1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,5],{2,3}]>0,1,0],{n,1000}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Dec 29 2019 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified February 23 00:28 EST 2020. Contains 332157 sequences. (Running on oeis4.)