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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.

A324446 Number of labeled cyclic chord diagrams with n chords such that the minimal chord length equals two.

Table of values

n a(n)
2 1
3 3
4 24
5 225
6 2489
7 32326
8 483968
9 8211543
10 155740501
11 3265307342
12 74995101843
13 1872508994356
14 50500982610620
15 1463062187672336
16 45314261742435296
17 1494164679669072424
18 52257665502536426741
19 1932255827699763531474
20 75312621088768346098203

List of values

[1, 3, 24, 225, 2489, 32326, 483968, 8211543, 155740501, 3265307342, 74995101843, 1872508994356, 50500982610620, 1463062187672336, 45314261742435296, 1494164679669072424, 52257665502536426741, 1932255827699763531474, 75312621088768346098203]

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

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