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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.

A375266 Irregular triangle read by rows in which row n lists the iterates of the A375265 map from n to 1.

Table of values

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

List of values

[1, 2, 1, 3, 1, 4, 2, 1, 5, 16, 8, 4, 2, 1, 6, 2, 1, 7, 22, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1, 8, 4, 2, 1, 9, 3, 1, 10, 5, 16, 8, 4, 2, 1, 11, 34, 17, 52, 26, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1, 12, 4, 2, 1, 13, 40, 20, 10, 5, 16, 8, 4, 2, 1]

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

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