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.

A325007 Array read by descending antidiagonals: A(n,k) is the number of achiral colorings of the facets of a regular n-dimensional orthotope using up to k colors.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 6
6 1
7 4
8 18
9 10
10 1
11 5
12 40
13 55
14 15
15 1
16 6
17 75
18 200
19 126
20 21
21 1
22 7
23 126
24 560
25 700
26 252
27 28
28 1
29 8
30 196
31 1316
32 2850
33 1996
34 462
35 36
36 1
37 9
38 288
39 2730
40 9261
41 11376
42 5004
43 792
44 45
45 1
46 10
47 405
48 5160
49 25480
50 50127
51 38550
52 11440
53 1287
54 55
55 1
56 11
57 550
58 9075
59 61776
60 181027
61 225225
62 116160
63 24310
64 2002
65 66
66 1

List of values

[1, 2, 1, 3, 6, 1, 4, 18, 10, 1, 5, 40, 55, 15, 1, 6, 75, 200, 126, 21, 1, 7, 126, 560, 700, 252, 28, 1, 8, 196, 1316, 2850, 1996, 462, 36, 1, 9, 288, 2730, 9261, 11376, 5004, 792, 45, 1, 10, 405, 5160, 25480, 50127, 38550, 11440, 1287, 55, 1, 11, 550, 9075, 61776, 181027, 225225, 116160, 24310, 2002, 66, 1]