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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.

A180424 "ARE(n,k)" triangle read by rows. ARE(n,k) is the number of aperiodic k-reverses of n up to cyclic equivalence.

Table of values

n a(n)
1 1
2 1
3 0
4 1
5 1
6 0
7 1
8 1
9 1
10 0
11 1
12 2
13 2
14 1
15 0
16 1
17 2
18 1
19 2
20 1
21 0
22 1
23 3
24 3
25 3
26 3
27 1
28 0
29 1
30 3
31 3
32 4
33 3
34 3
35 1
36 0
37 1
38 4
39 3
40 6
41 6
42 3
43 4
44 1
45 0
46 1
47 4
48 4
49 8
50 5
51 8
52 4
53 4
54 1
55 0
56 1
57 5
58 5
59 10
60 10
61 10
62 10
63 5
64 5
65 1
66 0
67 1
68 5
69 4
70 12
71 10
72 17
73 10
74 12
75 4
76 5
77 1
78 0

List of values

[1, 1, 0, 1, 1, 0, 1, 1, 1, 0, 1, 2, 2, 1, 0, 1, 2, 1, 2, 1, 0, 1, 3, 3, 3, 3, 1, 0, 1, 3, 3, 4, 3, 3, 1, 0, 1, 4, 3, 6, 6, 3, 4, 1, 0, 1, 4, 4, 8, 5, 8, 4, 4, 1, 0, 1, 5, 5, 10, 10, 10, 10, 5, 5, 1, 0, 1, 5, 4, 12, 10, 17, 10, 12, 4, 5, 1, 0]

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