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.

A284855 Array read by antidiagonals: T(n,k) = number of necklaces with n beads and k colors that are the same when turned over.

Table of values

n a(n)
1 1
2 2
3 1
4 3
5 3
6 1
7 4
8 6
9 4
10 1
11 5
12 10
13 9
14 6
15 1
16 6
17 15
18 16
19 18
20 8
21 1
22 7
23 21
24 25
25 40
26 27
27 12
28 1
29 8
30 28
31 36
32 75
33 64
34 54
35 16
36 1
37 9
38 36
39 49
40 126
41 125
42 160
43 81
44 24
45 1
46 10
47 45
48 64
49 196
50 216
51 375
52 256
53 162
54 32
55 1
56 11
57 55
58 81
59 288
60 343
61 756
62 625
63 640
64 243
65 48
66 1

List of values

[1, 2, 1, 3, 3, 1, 4, 6, 4, 1, 5, 10, 9, 6, 1, 6, 15, 16, 18, 8, 1, 7, 21, 25, 40, 27, 12, 1, 8, 28, 36, 75, 64, 54, 16, 1, 9, 36, 49, 126, 125, 160, 81, 24, 1, 10, 45, 64, 196, 216, 375, 256, 162, 32, 1, 11, 55, 81, 288, 343, 756, 625, 640, 243, 48, 1]

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

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