cp's OEIS Frontend

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.

A303866 Number of noncrossing path sets on 4*n nodes up to rotation with each path having exactly 4 nodes.

Table of values

n a(n)
0 1
1 3
2 36
3 960
4 35956
5 1588192
6 77381016
7 4031052368
8 220584971892
9 12535415236272
10 734006917110352
11 44036846006084336
12 2695712407044476920
13 167837690527630068192
14 10601944003900014217704
15 678116169233319969588160
16 43848248800067454244195956
17 2862607888444933662236506240

List of values

[1, 3, 36, 960, 35956, 1588192, 77381016, 4031052368, 220584971892, 12535415236272, 734006917110352, 44036846006084336, 2695712407044476920, 167837690527630068192, 10601944003900014217704, 678116169233319969588160, 43848248800067454244195956, 2862607888444933662236506240]

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

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