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 A101566 #3 Mar 30 2012 18:59:02 %S A101566 1,1,1,2,1,1,2,2,1,1,4,2,2,1,1,4,4,2,2,1,1,6,4,4,2,2,1,1,6,6,4,4,2,2, %T A101566 1,1,10,6,6,4,4,2,2,1,1,10,10,6,6,4,4,2,2,1,1,14,10,10,6,6,4,4,2,2,1, %U A101566 1,14,14,10,10,6,6,4,4,2,2,1,1,20,14,14,10,10,6,6,4,4,2,2,1,1,20,20,14,14,10 %N A101566 Binary partition sequence matrix. %C A101566 Row sums are A000123. %F A101566 Inverse matrix of T(n, k)=if(k<=n, (-1)^A010060(n-k), 0) %Y A101566 Cf. A018819. %K A101566 easy,nonn,tabl %O A101566 0,4 %A A101566 _Paul Barry_, Dec 07 2004