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%I #7 Nov 10 2018 10:16:17
%S 1,0,0,0,0,0,0,0,0,0,0,0,0,0,-1,0,0,0,0,0,0,-1,0,0,0,0,-1,0,0,-1,-1,0,
%T 0,0,0,0,0,0,-1,0,1,-1,-1,1,1,-1,-1,1,0,0,0,1,1,-1,-1,2,2,0,0,2,1,-1,
%U -1,2,2,-1,0,4,3,-3,0,4,2,0,0,3,3,-2,-2,4,4,-3,0,7
%N Expansion of Product_{0 < i < j < k} (1 - x^(i^2 + j^2 + k^2)).
%F G.f.: Product_{k>0} (1 - x^k)^A025442(k).
%Y Cf. A025442, A320332, A321448.
%K sign
%O 0,56
%A _Seiichi Manyama_, Nov 09 2018