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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.

A376686 a(n) is the unique k such that A376677(k) is the reversal of A376677(n), or -1 if no such k exists.

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 4
6 6
7 10
8 8
9 12
10 7
11 11
12 9
13 15
14 21
15 13
16 19
17 17
18 18
19 16
20 22
21 14
22 20
23 23
24 32
25 28
26 30
27 35
28 25
29 33
30 26
31 34
32 24
33 29
34 31
35 27
36 36
37 46
38 53
39 50
40 40
41 52
42 44
43 48
44 42
45 54
46 37
47 49
48 43
49 47
50 39
51 51
52 41
53 38
54 45
55 60
56 76
57 66
58 63
59 79
60 55
61 71
62 65
63 58
64 74
65 62
66 57
67 67

List of values

[1, 2, 3, 5, 4, 6, 10, 8, 12, 7, 11, 9, 15, 21, 13, 19, 17, 18, 16, 22, 14, 20, 23, 32, 28, 30, 35, 25, 33, 26, 34, 24, 29, 31, 27, 36, 46, 53, 50, 40, 52, 44, 48, 42, 54, 37, 49, 43, 47, 39, 51, 41, 38, 45, 60, 76, 66, 63, 79, 55, 71, 65, 58, 74, 62, 57, 67]

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

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