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%I #7 Jan 26 2019 19:39:50
%S 96,196,296,396,496,596,696,796,896,960,996,1096,1196,1296,1396,1496,
%T 1596,1696,1796,1896,1960,1996,2096,2196,2296,2396,2496,2596,2696,
%U 2796,2896,2960,2996,3096,3196,3296,3396,3496,3596
%N Numbers n such that string 9,6 occurs in the base 10 representation of n but not of n-1.
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n],{9,6}]>0,1,0],{n,3600}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jan 26 2019 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_
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