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A306791
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Number of distinct eigenvalues of n X n matrices with elements {-1, 1}.
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3
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OFFSET
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1,1
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LINKS
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CROSSREFS
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Number of characteristic polynomials is in A272662.
Number of minimal polynomials is in A306782.
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KEYWORD
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nonn,more,hard
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AUTHOR
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STATUS
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approved
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