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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.

A344844 A prime-factor-based permutation of the positive integers, based on a recursive definition (see Comments for the algorithm).

Table of values

n a(n)
1 1
2 2
3 3
4 4
5 6
6 9
7 5
8 10
9 15
10 25
11 8
12 12
13 18
14 27
15 20
16 30
17 45
18 50
19 75
20 125
21 7
22 14
23 21
24 35
25 49
26 28
27 42
28 63
29 70
30 105
31 175
32 98
33 147
34 245
35 343
36 16
37 24
38 36
39 54
40 81
41 40
42 60
43 90
44 135
45 100
46 150
47 225
48 250
49 375
50 625
51 56
52 84
53 126
54 189
55 140
56 210
57 315
58 350
59 525
60 875
61 196
62 294
63 441

List of values

[1, 2, 3, 4, 6, 9, 5, 10, 15, 25, 8, 12, 18, 27, 20, 30, 45, 50, 75, 125, 7, 14, 21, 35, 49, 28, 42, 63, 70, 105, 175, 98, 147, 245, 343, 16, 24, 36, 54, 81, 40, 60, 90, 135, 100, 150, 225, 250, 375, 625, 56, 84, 126, 189, 140, 210, 315, 350, 525, 875, 196, 294, 441]

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

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