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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.

A258212 Irregular triangle (or "lower Wythoff tree", or Beatty tree for r = golden ratio ), T, of all nonnegative integers, each exactly once, as determined from the lower Wythoff sequence as described in Comments.

Table of values

n a(n)
1 0
2 1
3 3
4 2
5 6
6 4
7 11
8 8
9 7
10 19
11 5
12 12
13 14
14 32
15 9
16 21
17 24
18 20
19 53
20 16
21 13
22 15
23 33
24 35
25 40
26 87
27 10
28 22
29 25
30 27
31 55
32 58
33 66
34 54
35 142
36 17
37 37
38 42
39 45
40 34
41 36
42 41
43 88
44 90
45 95
46 108
47 231
48 29
49 23
50 26
51 28
52 56
53 59
54 61
55 67
56 69
57 74
58 144
59 147
60 155
61 176
62 143
63 375
64 18
65 38

List of values

[0, 1, 3, 2, 6, 4, 11, 8, 7, 19, 5, 12, 14, 32, 9, 21, 24, 20, 53, 16, 13, 15, 33, 35, 40, 87, 10, 22, 25, 27, 55, 58, 66, 54, 142, 17, 37, 42, 45, 34, 36, 41, 88, 90, 95, 108, 231, 29, 23, 26, 28, 56, 59, 61, 67, 69, 74, 144, 147, 155, 176, 143, 375, 18, 38]

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

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