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.

A303865 Number of noncrossing path sets on 3*n nodes up to rotation with each path having exactly 3 nodes.

Table of values

n a(n)
0 1
1 1
2 6
3 38
4 384
5 4425
6 57976
7 807318
8 11828706
9 179826245
10 2816100678
11 45170552490
12 739103543356
13 12297976924176
14 207577047945312
15 3547290764931730
16 61277684496311364
17 1068648890500799799
18 18794421104465407618
19 333037302131948734566
20 5941487005826379359448

List of values

[1, 1, 6, 38, 384, 4425, 57976, 807318, 11828706, 179826245, 2816100678, 45170552490, 739103543356, 12297976924176, 207577047945312, 3547290764931730, 61277684496311364, 1068648890500799799, 18794421104465407618, 333037302131948734566, 5941487005826379359448]

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

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