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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.

A331353 Number of achiral colorings of the edges (or triangular faces) of a regular 4-dimensional simplex with n available colors.

Table of values

n a(n)
1 1
2 28
3 387
4 2784
5 13125
6 46836
7 137543
8 349952
9 797769
10 1667500
11 3248971
12 5973408
13 10459917
14 17571204
15 28479375
16 44742656
17 68393873
18 102041532
19 148984339
20 213340000
21 300189141
22 415735188
23 567481047
24 764423424

List of values

[1, 28, 387, 2784, 13125, 46836, 137543, 349952, 797769, 1667500, 3248971, 5973408, 10459917, 17571204, 28479375, 44742656, 68393873, 102041532, 148984339, 213340000, 300189141, 415735188, 567481047, 764423424]

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

Content is available under The OEIS End-User License Agreement.