This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A103707 #2 Mar 30 2012 17:31:12
%S A103707 1,9,17,9,15,17,9,13,9,15,17,9,11,17,9,13,9,15,17,9,9,9,15,17,9,11,17,
%T A103707 9,13,9,15,17,17,17,9,13,9,15,17,9,9,9,15,17,9,11,17,9,13,9,15,9,15,9,
%U A103707 15,17,9,11,17,9,13,9,15,17,17,17,9,13,9,15,17,9,9,9,15,17,9,11,17,9,13,17
%N A103707 Add 8 to each of the preceding digits, beginning with 1.
%t A103707 Flatten[ NestList[ Function[x, Flatten[ IntegerDigits[x] + 8]], {1}, 9]]
%Y A103707 Cf. A103699, A103701, A103702, A103703, A103704, A103705, A103706, A103708.
%K A103707 base,nonn
%O A103707 1,2
%A A103707 _Robert G. Wilson v_, Feb 12 2005