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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.

A358653 a(n) is the number of trivial braids on 3 strands which are products of n generators a, b, where a = sigma_1 sigma_2 sigma_1 and b = sigma_1 sigma_2.

Table of values

n a(n)
0 1
1 0
2 4
3 0
4 28
5 10
6 244
7 210
8 2412
9 3366
10 26014
11 49456
12 299452
13 701818
14 3624478

List of values

[1, 0, 4, 0, 28, 10, 244, 210, 2412, 3366, 26014, 49456, 299452, 701818, 3624478]

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

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