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A211645 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2>=2n.

%I A211645 #5 Dec 04 2016 19:46:27
%S A211645 0,1,7,26,60,118,206,332,495,709,974,1299,1693,2159,2696,3321,4036,
%T A211645 4847,5757,6781,7913,9165,10543,12053,13704,15498,17437,19538,21795,
%U A211645 24220,26822,29607,32572,35735,39087,42643,46418,50409,54609,59041
%N A211645 Number of ordered triples (w,x,y) with all terms in {1,...,n} and w^2+x^2+y^2>=2n.
%C A211645 For a guide to related sequences, see A211422.
%t A211645 t = Compile[{{n, _Integer}}, Module[{s = 0},
%t A211645     (Do[If[w^2 + x^2 + y^2 >= 2 n, s = s + 1],
%t A211645         {w, 1, #}, {x, 1, #}, {y, 1, #}] &[n]; s)]];
%t A211645 Map[t[#] &, Range[0, 80]]     (* A211645 *)
%t A211645 (* _Peter J. C. Moses_, Apr 13 2012 *)
%Y A211645 Cf. A211422.
%K A211645 nonn
%O A211645 0,3
%A A211645 _Clark Kimberling_, Apr 18 2012