%I #7 Jan 08 2023 13:52:02
%S 24,105,186,224,267,348,429,510,591,672,753,834,915,953,996,1077,1158,
%T 1239,1320,1401,1482,1563,1644,1682,1725,1806,1887,2024,2049,2130,
%U 2211,2292,2373,2411,2454,2535,2616,2697,2778,2859
%N Numbers n such that string 2,6 occurs in the base 9 representation of n but not of n+1.
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,9],{2,6}]>0,1,0],{n,3000}],{1,0}][[All,1]] (* _Harvey P. Dale_, Jan 08 2023 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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