A358486 a(n) is the minimal permanent of an n X n matrix using the integers 0 to n^2 - 1.

1, 0, 2, 128, 18948, 40179728, 2863042492

Offset: 0

Author

Stefano Spezia, Nov 18 2022

Keywords

• nonn
• hard
• more

Examples

			a(3) = 128:
     [0, 1, 2;
      4, 6, 8;
      3, 5, 7]
		

Crossrefs

Cf. A350565 (integers 1 to n^2), A358487 (maximal).

Extensions

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