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 A119968 #7 May 10 2013 12:45:46
%S A119968 1,2,3,5,9,16,27,44,73,130,251,507,1025,2016,3811,6907,12033,20282,
%T A119968 33475,55253,94185,171896,342651,737266,1655657,3751786,8386587,
%U A119968 18274843,38629505,79123224,157157411,303174298,569093601,1041436386
%N A119968 Binomial transform of Fredholm-Rueppel sequence.
%C A119968 Binomial transform of A036987.
%C A119968 Number of compositions of n such that number of parts is of the form 2^m, m>=0 (offset 1). - _Vladeta Jovovic_, Jun 27 2007
%F A119968 G.f.: (1/(1-x))*sum{k>=0, (x/(1-x))^(2^k-1)}; a(n)=sum{k=0..n, C(n,2^k-1)}; a(n)=sum{k=0..n, C(n,k)*mod(C(k),2)};
%t A119968 Table[Sum[Binomial[n,2^k-1],{k,0,n}],{n,0,40}] (* _Harvey P. Dale_, Aug 18 2012 *)
%K A119968 easy,nonn
%O A119968 0,2
%A A119968 _Paul Barry_, Jun 01 2006