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%I #14 Dec 06 2022 09:57:48
%S 1,0,-4,-110,-5072,-488212,-86577891
%N 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 a(2) = -4:
%e [0, 2;
%e 2, 1]
%e a(3) = -110:
%e [1, 3, 5;
%e 3, 4, 0;
%e 5, 0, 2]
%Y Cf. A000217, A351147, A351153.
%Y Cf. A358807 (maximal), A358808 (minimal permanent), A358809 (maximal permanent).
%K sign,hard,more
%O 0,3
%A _Stefano Spezia_, Dec 02 2022