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%I #5 Dec 04 2016 19:46:28
%S 0,1,4,7,11,17,23,32,38,48,60,66,78,87,102,114,121,139,157,169,178,
%T 196,214,232,241,263,284,296,314,329,359,371,386,410,434,452,471,495,
%U 516,540,555,582,612,630,651,678,702,729,738,772,805,829,853,871
%N Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2<=3n.
%C For a guide to related sequences, see A211422.
%t t = Compile[{{n, _Integer}}, Module[{s = 0},
%t (Do[If[w^2 + x^2 + y^2 <= 3 n, s = s + 1],
%t {w, 1, #}, {x, 1, #}, {y, 1, #}] &[n]; s)]];
%t Map[t[#] &, Range[0, 80]] (* A211647 *)
%t (* _Peter J. C. Moses_, Apr 13 2012 *)
%Y Cf. A211422.
%K nonn
%O 0,3
%A _Clark Kimberling_, Apr 18 2012
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