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A044658 Numbers n such that string 2,8 occurs in the base 9 representation of n but not of n+1. 0

%I

%S 26,107,188,242,269,350,431,512,593,674,755,836,917,971,998,1079,1160,

%T 1241,1322,1403,1484,1565,1646,1700,1727,1808,1889,1970,2051,2186,

%U 2213,2294,2375,2429,2456,2537,2618,2699,2780,2861

%N Numbers n such that string 2,8 occurs in the base 9 representation of n but not of n+1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,9],{2,8}]>0,1,0],{n,3000}],{1,0}][[All,1]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jun 23 2018 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified August 17 08:02 EDT 2022. Contains 356184 sequences. (Running on oeis4.)