%I #19 Jun 27 2019 15:16:37
%S 70,170,270,370,470,570,670,709,770,870,970,1070,1170,1270,1370,1470,
%T 1570,1670,1709,1770,1870,1970,2070,2170,2270,2370,2470,2570,2670,
%U 2709,2770,2870,2970,3070,3170,3270,3370,3470,3570
%N Numbers n such that string 7,0 occurs in the base 10 representation of n but not of n+1.
%C Numbers whose base 10 representations end in the regular expression 709* and contain no other 70. - _Robert Israel_, Feb 24 2016
%H Georg Fischer, <a href="/A044783/b044783.txt">Table of n, a(n) for n = 1..10000</a>
%t SequencePosition[Table[If[SequenceCount[IntegerDigits[n],{7,0}]>0,1,0],{n,3600}],{1,0}][[All,1]] (* Requires Mathematica version 10 or later *) (* _Harvey P. Dale_, Apr 07 2019 *)
%Y Cf. A044402.
%K nonn,base
%O 1,1
%A _Clark Kimberling_
%E b-file corrected by _Georg Fischer_, Jun 27 2019