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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.

A325000 Array read by descending antidiagonals: T(n,k) is the number of unoriented colorings of the facets (or vertices) of a regular n-dimensional simplex using up to k colors.

Table of values

n a(n)
1 1
2 3
3 1
4 6
5 4
6 1
7 10
8 10
9 5
10 1
11 15
12 20
13 15
14 6
15 1
16 21
17 35
18 35
19 21
20 7
21 1
22 28
23 56
24 70
25 56
26 28
27 8
28 1
29 36
30 84
31 126
32 126
33 84
34 36
35 9
36 1
37 45
38 120
39 210
40 252
41 210
42 120
43 45
44 10
45 1
46 55
47 165
48 330
49 462
50 462
51 330
52 165
53 55
54 11
55 1
56 66
57 220
58 495
59 792
60 924
61 792
62 495
63 220
64 66
65 12
66 1

List of values

[1, 3, 1, 6, 4, 1, 10, 10, 5, 1, 15, 20, 15, 6, 1, 21, 35, 35, 21, 7, 1, 28, 56, 70, 56, 28, 8, 1, 36, 84, 126, 126, 84, 36, 9, 1, 45, 120, 210, 252, 210, 120, 45, 10, 1, 55, 165, 330, 462, 462, 330, 165, 55, 11, 1, 66, 220, 495, 792, 924, 792, 495, 220, 66, 12, 1]

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

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