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A306002
Number of distinct real eigenvalues of n X n matrices with elements {-1, 0, +1}.
1
3, 11, 157, 8825, 2681903
OFFSET
1,1
REFERENCES
Steven E. Thornton & Robert M. Corless, The Bohemian Eigenvalue Project, Poster Presented at The International Symposium on Symbolic and Algebraic Computation (ISSAC 2016). Wilfrid Laurier University, July 19-22, 2016.
LINKS
Steven E. Thornton & Robert M. Corless, The Bohemian Eigenvalue Project.
CROSSREFS
Number of distinct eigenvalues: A271570.
Number of characteristic polynomials: A272658.
Sequence in context: A010682 A080987 A132561 * A140538 A006485 A003115
KEYWORD
nonn,hard,more
AUTHOR
Steven E. Thornton, Jun 16 2018
STATUS
approved