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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.

A360276 Number of unordered quadruples of self-avoiding paths with nodes that cover all vertices of a convex n-gon; one-node paths are allowed.

Table of values

n a(n)
3 0
4 0
5 10
6 105
7 1015
8 9625
9 90972
10 861420
11 8191920
12 78309000
13 752317280
14 7257522272
15 70223986560
16 680703296000
17 6601793730560
18 63984047339520
19 619018056228864
20 5972223901440000
21 57415027394027520
22 549677356175073280
23 5238367168966328320
24 49678823782558924800
25 468783944069762252800

List of values

[0, 0, 10, 105, 1015, 9625, 90972, 861420, 8191920, 78309000, 752317280, 7257522272, 70223986560, 680703296000, 6601793730560, 63984047339520, 619018056228864, 5972223901440000, 57415027394027520, 549677356175073280, 5238367168966328320, 49678823782558924800, 468783944069762252800]

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

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