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 A211517 #4 Apr 21 2012 12:14:05
%S A211517 0,0,0,0,1,3,5,7,7,7,7,7,7,7,9,11,13,15,17,19,21,23,25,27,29,31,33,33,
%T A211517 33,33,33,33,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,
%U A211517 72,74,76,78,80,82,84,86,88,90,92,94,98,100,102,104,106,108
%N A211517 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^3=(x+y)^2.
%C A211517 For a guide to related sequences, see A211422.
%t A211517 t[n_] := t[n] = Flatten[Table[w^3 - (x + y)^2, {w, 1, n}, {x, 1, n}, {y, 1, n}]]
%t A211517 c[n_] := Count[t[n], 0]
%t A211517 t = Table[c[n], {n, 0, 80}] (* A211517 *)
%Y A211517 Cf. A211422.
%K A211517 nonn
%O A211517 0,6
%A A211517 _Clark Kimberling_, Apr 14 2012