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This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A077013 Number of different argument values of vector sums generated by n vectors chosen from 2n (equally spaced) points around the unit circle. Arguments are considered different only up to rotation and reflection.

Table of values

n a(n)
1 1
2 2
3 1
4 2
5 3
6 7
7 14
8 43
9 65
10 292
11 992
12 1154

List of values

[1, 2, 1, 2, 3, 7, 14, 43, 65, 292, 992, 1154]

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