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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.

A367339 a(n) = A367338(n) - n, or -1 if A367338(n) = -1.

Table of values

n a(n)
1 11
2 22
3 33
4 44
5 56
6 67
7 78
8 89
9 91
10 1
11 12
12 23
13 34
14 45
15 57
16 68
17 79
18 -1
19 91
20 2
21 13
22 24
23 35
24 47
25 58
26 69
27 -1
28 81
29 91
30 3
31 14
32 25
33 36
34 48
35 59
36 -1
37 71
38 81
39 91
40 4
41 15
42 26
43 38
44 49
45 -1
46 61
47 71
48 81
49 91
50 5
51 16
52 27
53 39
54 -1
55 51
56 61
57 71
58 81
59 91
60 6
61 17
62 29
63 -1
64 41
65 51
66 61
67 71
68 81
69 91
70 7
71 18
72 -1

List of values

[11, 22, 33, 44, 56, 67, 78, 89, 91, 1, 12, 23, 34, 45, 57, 68, 79, -1, 91, 2, 13, 24, 35, 47, 58, 69, -1, 81, 91, 3, 14, 25, 36, 48, 59, -1, 71, 81, 91, 4, 15, 26, 38, 49, -1, 61, 71, 81, 91, 5, 16, 27, 39, -1, 51, 61, 71, 81, 91, 6, 17, 29, -1, 41, 51, 61, 71, 81, 91, 7, 18, -1]

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

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