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A358806 a(n) is the minimal determinant of an n X n symmetric matrix using all the integers from 0 to n*(n + 1)/2 - 1.

%I A358806 #14 Dec 06 2022 09:57:48
%S A358806 1,0,-4,-110,-5072,-488212,-86577891
%N A358806 a(n) is the minimal determinant of an n X n symmetric matrix using all the integers from 0 to n*(n + 1)/2 - 1.
%e A358806 a(2) = -4:
%e A358806     [0, 2;
%e A358806      2, 1]
%e A358806 a(3) = -110:
%e A358806     [1, 3, 5;
%e A358806      3, 4, 0;
%e A358806      5, 0, 2]
%Y A358806 Cf. A000217, A351147, A351153.
%Y A358806 Cf. A358807 (maximal), A358808 (minimal permanent), A358809 (maximal permanent).
%K A358806 sign,hard,more
%O A358806 0,3
%A A358806 _Stefano Spezia_, Dec 02 2022