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 A127242 #2 Mar 30 2012 18:59:19
%S A127242 1,0,1,1,1,1,2,0,1,2,1,1,2,0,1,2,2,2,4,2,3,3,2,2,4,0,1,3,1,2,3,3,3,4,
%T A127242 3,2,5,2,5,5,5,2,4,5,2,7,3,6,5,1,7,7,3,4,5,6,4,4,4,2,9
%N A127242 Diagonal sums of Thue-Morse triangle A127241.
%F A127242 a(n)=sum{k=0..floor(n/2), A010060(binomial(k,n-2k))}
%K A127242 easy,nonn
%O A127242 0,7
%A A127242 _Paul Barry_, Jan 10 2007