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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.

A079707 In prime factorization of n replace odd primes with their prime predecessor.

Table of values

n a(n)
1 1
2 2
3 2
4 4
5 3
6 4
7 5
8 8
9 4
10 6
11 7
12 8
13 11
14 10
15 6
16 16
17 13
18 8
19 17
20 12
21 10
22 14
23 19
24 16
25 9
26 22
27 8
28 20
29 23
30 12
31 29
32 32
33 14
34 26
35 15
36 16
37 31
38 34
39 22
40 24
41 37
42 20
43 41
44 28
45 12
46 38
47 43
48 32
49 25
50 18
51 26
52 44
53 47
54 16
55 21
56 40
57 34
58 46
59 53
60 24
61 59
62 58
63 20
64 64
65 33
66 28
67 61
68 52
69 38
70 30
71 67
72 32
73 71
74 62
75 18

List of values

[1, 2, 2, 4, 3, 4, 5, 8, 4, 6, 7, 8, 11, 10, 6, 16, 13, 8, 17, 12, 10, 14, 19, 16, 9, 22, 8, 20, 23, 12, 29, 32, 14, 26, 15, 16, 31, 34, 22, 24, 37, 20, 41, 28, 12, 38, 43, 32, 25, 18, 26, 44, 47, 16, 21, 40, 34, 46, 53, 24, 59, 58, 20, 64, 33, 28, 61, 52, 38, 30, 67, 32, 71, 62, 18]

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

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