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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.

A077079 Number of inequivalent bracelets from A006840 with the additional equivalence condition that subsets of 1-beads whose position vectors add to zero can be removed. Different values of vector sums of (-1)^(k/n) with k taking n values in 1..2n up to rotation and reflection.

Table of values

n a(n)
1 1
2 2
3 3
4 6
5 11
6 20
7 53
8 130
9 199
10 784
11 2135
12 2649
13 15695
14 43085
15 32764

List of values

[1, 2, 3, 6, 11, 20, 53, 130, 199, 784, 2135, 2649, 15695, 43085, 32764]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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