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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.

A252001 Lexicographically earliest permutation of the positive integers, such that a carry occurs when adjacent terms are added in decimal representation.

Table of values

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

List of values

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

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

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