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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.

A220952 A twisted enumeration of the nonnegative integers.

Table of values

n a(n)
0 0
1 1
2 2
3 3
4 4
5 9
6 14
7 19
8 18
9 17
10 16
11 11
12 12
13 13
14 8
15 7
16 6
17 5
18 10
19 15
20 20
21 21
22 22
23 23
24 24
25 49
26 74
27 99
28 98
29 97
30 96
31 71
32 72
33 73
34 48
35 47
36 46
37 45
38 70
39 95
40 90
41 85
42 80
43 55
44 60
45 65
46 40
47 35
48 30
49 31
50 32
51 33
52 38
53 37
54 36
55 41
56 42
57 43
58 68
59 67
60 66
61 61
62 62
63 63
64 58
65 57
66 56
67 81
68 82
69 83
70 88

List of values

[0, 1, 2, 3, 4, 9, 14, 19, 18, 17, 16, 11, 12, 13, 8, 7, 6, 5, 10, 15, 20, 21, 22, 23, 24, 49, 74, 99, 98, 97, 96, 71, 72, 73, 48, 47, 46, 45, 70, 95, 90, 85, 80, 55, 60, 65, 40, 35, 30, 31, 32, 33, 38, 37, 36, 41, 42, 43, 68, 67, 66, 61, 62, 63, 58, 57, 56, 81, 82, 83, 88]

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

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