%I #7 Nov 01 2022 18:58:35
%S 13,38,63,69,88,113,138,163,188,194,213,238,263,288,313,319,349,363,
%T 388,413,438,444,463,488,513,538,563,569,588,613,638,663,688,694,713,
%U 738,763,788,813,819,838,863,888,913,938,944,974
%N Numbers n such that string 2,3 occurs in the base 5 representation of n but not of n+1.
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n,5],{2,3}]>0,1,0],{n,1000}],{1,0}][[All,1]] (* _Harvey P. Dale_, Nov 01 2022 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_