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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.

A001057 Canonical enumeration of integers: interleaved positive and negative integers with zero prepended.

Table of values

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

List of values

[0, 1, -1, 2, -2, 3, -3, 4, -4, 5, -5, 6, -6, 7, -7, 8, -8, 9, -9, 10, -10, 11, -11, 12, -12, 13, -13, 14, -14, 15, -15, 16, -16, 17, -17, 18, -18, 19, -19, 20, -20, 21, -21, 22, -22, 23, -23, 24, -24, 25, -25, 26, -26, 27, -27, 28, -28, 29, -29, 30, -30, 31, -31]

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

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