%I #7 Nov 19 2022 20:28:10
%S 1,0,2,128,18948,40179728,2863042492
%N a(n) is the minimal permanent of an n X n matrix using the integers 0 to n^2 - 1.
%e a(3) = 128:
%e [0, 1, 2;
%e 4, 6, 8;
%e 3, 5, 7]
%Y Cf. A350565 (integers 1 to n^2), A358487 (maximal).
%K nonn,hard,more
%O 0,3
%A _Stefano Spezia_, Nov 18 2022
%E a(4)-a(6) from _Hugo Pfoertner_, Nov 19 2022