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 A122205 #2 Mar 31 2012 13:21:32
%S A122205 1,1,1,2,2,5,5,12,17,31,31,96,96,197,324,629,629,1695,1695,4374,6266,
%T A122205 10671,10671,34402,38776,73274,109371,223510,223510,634267,634267,
%U A122205 1527075,2172013,3699717,4557494,12736034,12736034,25473763,38283071
%N A122205 Number of finite sequences b with b(0) = 1, b(i+1) = b(i)+d where d|b(i), ending with n.
%F A122205 a(1) = 1, for n>1, a(n) = sum_{d|n, d<n} a(n-d).
%Y A122205 Cf. A117497, A122206, A067951.
%K A122205 nonn
%O A122205 1,4
%A A122205 _Franklin T. Adams-Watters_, Aug 25 2006