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 A128810 #5 Sep 08 2013 13:31:05
%S A128810 1,1,1,0,0,1,0,1,1,1,1,0,1,0,1,1,0,1,0,1,1,1,0,1,0,0,0,1,1,0,1,1,0,1,
%T A128810 1,1,1,0,0,0,0,0,1,0,1,1,1,0,0,0,1,1,0,1,1,0,0,1,0,1,0,0,0,0,0,1,0,1,
%U A128810 1,0,1,1,0,0,0,1,1,1,1,0,0,0,0,0,1,0,1,0,1,0,1,1,1,0,0,0,1,1,0,1,0,1,0,1,1
%N A128810 Triangle formed by reading triangle A064189 mod 2 .
%C A128810 Also triangle formed by reading triangles A091965, A108149, A110877, A125906, A126954 mod 2 .
%F A128810 Sum_{k, 0<=k<=n}T(n,k)*x^k=A039963(n), A097357(n+1), A110565(n+1) for x=0,1,2 respectively . T(n,k)= (T(n-1,k-1)+T(n-1,k)+T(n-1,k+1)) mod 2, T(0,0)=1, T(n,k)=0 if k<0 or if k>n .
%e A128810 Triangle begins:
%e A128810 1;
%e A128810 1, 1;
%e A128810 0, 0, 1;
%e A128810 0, 1, 1, 1;
%e A128810 1, 0, 1, 0, 1;
%e A128810 1, 0, 1, 0, 1, 1;
%e A128810 1, 0, 1, 0, 0, 0, 1;
%e A128810 1, 0, 1, 1, 0, 1, 1, 1;
%e A128810 1, 0, 0, 0, 0, 0, 1, 0, 1;
%e A128810 1, 1, 0, 0, 0, 1, 1, 0, 1, 1;
%e A128810 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1 ;...
%K A128810 nonn,tabl
%O A128810 0,1
%A A128810 _Philippe Deléham_, Apr 09 2007