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A306794
Number of distinct real eigenvalues of n X n matrices with elements {-1, 1}.
1
2, 5, 15, 119, 2297, 145213
OFFSET
1,1
CROSSREFS
Number of distinct eigenvalues is in A306791.
Number of characteristic polynomials is in A272662.
Number of minimal polynomials is in A306782.
Sequence in context: A196196 A266573 A268121 * A111790 A309115 A248125
KEYWORD
nonn,more,hard
AUTHOR
Steven E. Thornton, Mar 10 2019
STATUS
approved