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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.

A368671 For any k >= 0, let P(k) = A368357(k) and P(-k) = A368358(k); for any n > 0, a(n) is the unique k such that P(k) = n.

Table of values

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

List of values

[0, 1, 2, -1, -3, -2, -4, 3, 7, 5, 9, 4, 8, 6, 10, -5, -13, -9, -17, -7, -15, -11, -19, -6, -14, -10, -18, -8, -16, -12, -20, 11, 27, 19, 35, 15, 31, 23, 39, 13, 29, 21, 37, 17, 33, 25, 41, 12, 28, 20, 36, 16, 32, 24, 40, 14, 30, 22, 38, 18, 34, 26, 42, -21]

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