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 A326772 #3 Jul 25 2019 21:50:34 %S A326772 0,4,2,1,7,4,5,15,0,6,2,8,5,12,1,6,0,10,7,9,3,3,9,15,13,0,19,5,12,1, %T A326772 17,8,3,13,28,16,15,5,12,0,16,22,6,2,13,13,19,16,4,11,14,0,22,8,17,16, %U A326772 6,8,1,22,18,3,28,17,5,14,7,3,1,20,10,0,22,18,11,2 %N A326772 Array T(x, z), x, z >= 0, read by increasing x+z and then increasing x: if A326764(x, y, z) = 0 for some y >= 0, then T(x, z) = y, else T(x, z) = -1. %H A326772 Rémy Sigrist, <a href="/A326772/a326772.gp.txt">PARI program for A326772</a> %o A326772 (PARI) See Links section. %Y A326772 Cf. A326764. %K A326772 nonn %O A326772 0,2 %A A326772 _Rémy Sigrist_, Jul 25 2019