A108381 Number of distinct magnitudes of the nonzero sums of distinct n-th roots of unity.

1, 1, 1, 2, 3, 3, 8, 9, 16, 17, 62, 23, 186, 95, 280, 240, 1963, 225, 6830, 1091

Offset: 1

Author

T. D. Noe, Jun 01 2005

Keywords

• nonn

Comments

There are 2^n sums of the n-th roots of unity.

Examples

			a(4)=2 because the nonzero sums of 4th roots of unity have magnitude 1 or sqrt(2).
		

Links

• T. D. Noe, Sums of Roots of Unity Plots

Crossrefs

Cf. A103314 (number of subsets of the n-th roots of unity summing to zero).