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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.

A340490 a(n) is the number of digits after the n-th digit of the Champernowne constant A033307 until the next appearance of that digit.

Table of values

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

List of values

[9, 13, 14, 15, 16, 17, 18, 19, 20, 2, 20, 1, 1, 2, 15, 2, 20, 2, 20, 2, 20, 2, 20, 2, 20, 2, 20, 5, 20, 2, 20, 2, 20, 1, 1, 2, 13, 2, 20, 2, 20, 2, 20, 2, 20, 2, 20, 7, 20, 2, 20, 2, 20, 2, 20, 1, 1, 2, 11, 2, 20, 2, 20, 2, 20, 2, 20, 9, 20, 2, 20, 2, 20, 2]

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