%N a(n) = least k such that base 10 representation of n begins at s(k), where s=A007376.
%C A229186 is the same sequence including the a(0) term.
%H Nathaniel Johnston, <a href="/A031297/b031297.txt">Table of n, a(n) for n = 1..10000</a>
%p with(StringTools): s:="": for n from 1 to 70 do s:=cat(s,convert(n,string)): od: seq(Search(convert(n, string), s), n=1..70); # _Nathaniel Johnston_, May 26 2011
%Y Cf. A229186 (same sequence but including the a(0) term).
%Y Cf. A165449.
%A _Clark Kimberling_