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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.

A362371 a(0)=0. For each digit in the sequence, append the smallest unused integer that contains that digit.

Table of values

n a(n)
0 0
1 10
2 1
3 20
4 11
5 2
6 30
7 12
8 13
9 21
10 3
11 40
12 14
13 22
14 15
15 23
16 24
17 16
18 31
19 4
20 50
21 17
22 34
23 25
24 26
25 18
26 5
27 27
28 32
29 28
30 41
31 19
32 6
33 33
34 51
35 42
36 35
37 60
38 61
39 7
40 36
41 43
42 29
43 45
44 52
45 46
46 71
47 8
48 53
49 62
50 37
51 38
52 72
53 82
54 48
55 44
56 81
57 91
58 9
59 56
60 39
61 63
62 54
63 100
64 47
65 92
66 73

List of values

[0, 10, 1, 20, 11, 2, 30, 12, 13, 21, 3, 40, 14, 22, 15, 23, 24, 16, 31, 4, 50, 17, 34, 25, 26, 18, 5, 27, 32, 28, 41, 19, 6, 33, 51, 42, 35, 60, 61, 7, 36, 43, 29, 45, 52, 46, 71, 8, 53, 62, 37, 38, 72, 82, 48, 44, 81, 91, 9, 56, 39, 63, 54, 100, 47, 92, 73]

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

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