A306819 Number of nilpotent n X n matrices with elements {-1, 1}.

0, 4, 0, 2064, 0, 100172800

Offset: 1

Author

Steven E. Thornton, Mar 11 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 characteristic polynomials is in A272662.

Number of distinct eigenvalues is in A306791.