A306794 Number of distinct real eigenvalues of n X n matrices with elements {-1, 1}.

2, 5, 15, 119, 2297, 145213

Offset: 1

Author

Steven E. Thornton, Mar 10 2019

Keywords

• nonn
• more
• hard

Links

• S. E. Thornton, Properties of the Bohemian family of n x n matrices with population {-1, 1}, Characteristic Polynomial Database.

Crossrefs

Number of distinct eigenvalues is in A306791.

Number of characteristic polynomials is in A272662.

Number of minimal polynomials is in A306782.