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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.

A269863 Permutation of natural numbers: a(1) = 1, a(A269360(n)) = 2*a(n), a(A250469(1+n)) = 1 + 2*a(n).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 5
6 6
7 9
8 10
9 7
10 8
11 13
12 18
13 17
14 26
15 11
16 12
17 37
18 34
19 25
20 74
21 19
22 20
23 69
24 50
25 21
26 14
27 15
28 16
29 41
30 138
31 33
32 82
33 27
34 36
35 53
36 22
37 277
38 66
39 35
40 52
41 45
42 554
43 105
44 90
45 23
46 24
47 1109
48 210
49 101
50 42
51 75
52 68
53 49
54 2218
55 149
56 38
57 51
58 148
59 137
60 98
61 297
62 274
63 39
64 40
65 29
66 30
67 197
68 594
69 139
70 100
71 61
72 394
73 201
74 122
75 43
76 28
77 73
78 106
79 789
80 402
81 31
82 32

List of values

[1, 2, 3, 4, 5, 6, 9, 10, 7, 8, 13, 18, 17, 26, 11, 12, 37, 34, 25, 74, 19, 20, 69, 50, 21, 14, 15, 16, 41, 138, 33, 82, 27, 36, 53, 22, 277, 66, 35, 52, 45, 554, 105, 90, 23, 24, 1109, 210, 101, 42, 75, 68, 49, 2218, 149, 38, 51, 148, 137, 98, 297, 274, 39, 40, 29, 30, 197, 594, 139, 100, 61, 394, 201, 122, 43, 28, 73, 106, 789, 402, 31, 32]

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

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