A358487 a(n) is the maximal permanent of an n X n matrix using the integers 0 to n^2 - 1.

1, 0, 6, 553, 107140, 40179728, 27312009708

Offset: 0

Author

Stefano Spezia, Nov 18 2022

Keywords

• nonn
• hard
• more

Examples

			a(3) = 553:
     [1, 2, 8;
      7, 5, 0;
      4, 6, 3]
		

Crossrefs

Cf. A350566 (integers 1 to n^2), A358486 (minimal).

Extensions

a(4)-a(6) from Hugo Pfoertner, Nov 19 2022