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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.

A324432 Number of labeled cyclic chord diagrams with n chords such that every chord has length at least six.

Table of values

n a(n)
0 1
1 0
2 0
3 0
4 0
5 0
6 1
7 29
8 879
9 23559
10 607897
11 16179520
12 449286927
13 13098525681
14 401675273973
15 12961858610835
16 439969542845247
17 15694595867800757
18 587665598756534677
19 23065866584266238427
20 947631130543961813887
21 40691002929409496892633
22 1823524185613956274776800

List of values

[1, 0, 0, 0, 0, 0, 1, 29, 879, 23559, 607897, 16179520, 449286927, 13098525681, 401675273973, 12961858610835, 439969542845247, 15694595867800757, 587665598756534677, 23065866584266238427, 947631130543961813887, 40691002929409496892633, 1823524185613956274776800]

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

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