A386204 Number of distinct values of the determinant of an n X n (0,1)-matrix with exactly three 1's in each row and each column.

1, 2, 3, 3, 7, 11, 7

Offset: 3

Author

Robert P. P. McKone, Jul 15 2025

Keywords

• nonn
• hard
• more

Comments

a(10) >= 25.

Links

• Robert P. P. McKone, Python code to find A386204(n) unique determinants and one example matrix
• Robert P. P. McKone, One example matrix for each known determinant for a(3)-a(9)

Crossrefs

Cf. A185178 (distinct permanents).

Cf. A001501 (number of n X n (0,1)-matrix with exactly three 1's in each row and each column).