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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.

A062039 a(0) = 1; a(n+1) = a(n) - n if a(n) > n, otherwise a(n+1) = a(n) + a(a(n)).

Table of values

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

List of values

[1, 1, 2, 4, 1, 2, 4, 5, 7, 12, 3, 7, 12, 24, 11, 18, 3, 7, 12, 24, 5, 7, 12, 24, 1, 2, 4, 5, 7, 12, 24, 25, 27, 32, 59, 25, 27, 32, 59, 21, 28, 35, 60, 18, 30, 54, 9, 21, 28, 35, 60, 10, 13, 37, 69, 15, 33, 65, 8, 15, 33, 65, 4, 5, 7, 12, 24, 25, 27, 32, 59, 74, 3, 7, 12, 24, 25, 27]

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