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 A060287 #5 May 10 2013 12:44:37
%S A060287 1,0,0,0,0,0,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,2,2,3,3,3,2,2,2,3,4,5,5,4,
%T A060287 3,2,3,4,6,7,8,7,6,4,3,4,6,9,12,13,13,12,9,6,4,5,8,13,17,21,21,21,17,
%U A060287 13,8,5,6,11,18,25,31,34,34,31,25,18,11,6,9,15,26,37,48,53,58,53,48,37,26
%N A060287 Triangle formed from coefficients in expansion of Product_{i=3..infinity, j=0..i} 1/(1-x^(i-j)*y^j).
%e A060287 Series ends ... + 2*x^6 + 2*x^5*y + 3*x^4*y^2 + 3*x^3*y^3 + 3*x^2*y^4 + 2*x*y^5 + 2*y^6 + x^5 + x^4*y + x^3*y^2 + x^2*y^3 + x*y^4 + y^5 + x^4 + x^3*y + x^2*y^2 + x*y^3 + y^4 + x^3 + x^2*y + x*y^2 + y^3 + 1.
%e A060287 [1], [0, 0], [0, 0, 0], [1, 1, 1, 1], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1, 1], [2, 2, 3, 3, 3, 2, 2], [2, 3, 4, 5, 5, 4, 3, 2], [3, 4, 6, 7, 8, 7, 6, 4, 3], ...
%Y A060287 Cf. A054225, A060244.
%K A060287 easy,nonn,tabl
%O A060287 0,22
%A A060287 _Vladeta Jovovic_, Mar 23 2001