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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.

A109167 a(n) = least nonnegative integer such that n appears a(n) times.

Table of values

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

List of values

[1, 2, 1, 0, 4, 4, 4, 4, 5, 5, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8, 8, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 17, 17, 17, 18]

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