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A044172 Numbers n such that string 4,6 occurs in the base 7 representation of n but not of n-1. 0

%I

%S 34,83,132,181,230,238,279,328,377,426,475,524,573,581,622,671,720,

%T 769,818,867,916,924,965,1014,1063,1112,1161,1210,1259,1267,1308,1357,

%U 1406,1455,1504,1553,1602,1610,1651,1666,1749,1798

%N Numbers n such that string 4,6 occurs in the base 7 representation of n but not of n-1.

%t Transpose[SequencePosition[Table[If[SequenceCount[IntegerDigits[n,7],{4,6}]>0,1,0],{n,2000}],{0,1}]][[2]] (* The program uses the SequencePosition and SequenceCount functions from Mathematica version 10 *) (* _Harvey P. Dale_, May 14 2016 *)

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified June 29 09:21 EDT 2022. Contains 354910 sequences. (Running on oeis4.)