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A043203 Numbers k such that 3 and 6 occur juxtaposed in the base-9 representation of k but not of k-1. 0

%I

%S 33,57,114,138,195,219,276,297,357,381,438,462,513,543,600,624,681,

%T 705,762,786,843,867,924,948,1005,1026,1086,1110,1167,1191,1242,1272,

%U 1329,1353,1410,1434,1491,1515,1572,1596,1653,1677

%N Numbers k such that 3 and 6 occur juxtaposed in the base-9 representation of k but not of k-1.

%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,9],{3,6}]>0 || SequenceCount[IntegerDigits[n,9],{6,3}]>0,1,0],{n,1700}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Apr 16 2019 *)

%Y Cf. A007095.

%K nonn,base

%O 1,1

%A _Clark Kimberling_

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Last modified October 25 01:40 EDT 2021. Contains 348233 sequences. (Running on oeis4.)