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 A154403 #3 Jun 14 2013 10:41:15
%S A154403 1,1,1,1,1,1,2,2,2,3,3,3,4,4,5,6,6,7,8,8,9,11,11,12,14,14,15,17,18,19,
%T A154403 22,23,24,27,28,30,33,35,37,40,42,44,48,50,53,58,60,63,68,71,74,80,84,
%U A154403 87,93,97,101,107,112,117,124,129,135,143,148,155,164,170,177,187,194
%N A154403 Number of ways to write n as a sum a_1 + ... + a_k where a_i >= 2 * a_{i-1} > 1.
%F A154403 G.f.: x+(1/(1+x))/Product_{k>0}(1-x^(2^k-1)).
%Y A154403 Cf. A000929, A154402.
%K A154403 easy,nonn
%O A154403 0,7
%A A154403 _Vladeta Jovovic_, Jan 08 2009
%E A154403 More terms from _R. J. Mathar_, Jan 21 2009