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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.

A076905 a(1)=1, a(n)=n-a(n-1)+a(a(n-1))-a(a(a(n-1))).

Table of values

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

List of values

[1, 1, 2, 2, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 9, 10, 10, 11, 12, 12, 13, 13, 14, 14, 15, 16, 16, 17, 17, 18, 18, 19, 19, 20, 21, 21, 22, 22, 23, 23, 24, 25, 25, 26, 26, 27, 28, 28, 29, 29, 30, 30, 31, 32, 32, 33, 33, 34, 34, 35, 35, 36, 37, 37, 38, 38, 39, 39, 40, 41, 41, 42, 42]

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