|
%I #7 Jul 05 2019 16:31:19
%S 65,165,265,365,465,565,650,665,765,865,965,1065,1165,1265,1365,1465,
%T 1565,1650,1665,1765,1865,1965,2065,2165,2265,2365,2465,2565,2650,
%U 2665,2765,2865,2965,3065,3165,3265,3365,3465,3565
%N Numbers n such that string 6,5 occurs in the base 10 representation of n but not of n-1.
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n],{6,5}]>0,1,0],{n,4000}],{0,1}][[All,2]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Jul 05 2019 *)
%K nonn,base
%O 1,1
%A _Clark Kimberling_
|
