%I #7 Nov 19 2022 20:28:18
%S 1,0,6,553,107140,40179728,27312009708
%N a(n) is the maximal permanent of an n X n matrix using the integers 0 to n^2 - 1.
%e a(3) = 553:
%e [1, 2, 8;
%e 7, 5, 0;
%e 4, 6, 3]
%Y Cf. A350566 (integers 1 to n^2), A358486 (minimal).
%K nonn,hard,more
%O 0,3
%A _Stefano Spezia_, Nov 18 2022
%E a(4)-a(6) from _Hugo Pfoertner_, Nov 19 2022