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A108381
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Number of distinct magnitudes of the nonzero sums of distinct n-th roots of unity.
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3
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1, 1, 1, 2, 3, 3, 8, 9, 16, 17, 62, 23, 186, 95, 280, 240, 1963, 225, 6830, 1091
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OFFSET
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1,4
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COMMENTS
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There are 2^n sums of the n-th roots of unity.
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LINKS
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EXAMPLE
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a(4)=2 because the nonzero sums of 4th roots of unity have magnitude 1 or sqrt(2).
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CROSSREFS
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Cf. A103314 (number of subsets of the n-th roots of unity summing to zero).
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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