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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.

A179983 Positive integers m such that, if k appears in m's prime signature, k-1 appears at least as often as k (for any integer k > 1).

Table of values

n a(n)
1 1
2 2
3 3
4 5
5 6
6 7
7 10
8 11
9 12
10 13
11 14
12 15
13 17
14 18
15 19
16 20
17 21
18 22
19 23
20 26
21 28
22 29
23 30
24 31
25 33
26 34
27 35
28 37
29 38
30 39
31 41
32 42
33 43
34 44
35 45
36 46
37 47
38 50
39 51
40 52
41 53
42 55
43 57
44 58
45 59
46 60
47 61
48 62
49 63
50 65
51 66
52 67
53 68
54 69
55 70
56 71
57 73
58 74
59 75
60 76
61 77
62 78
63 79
64 82
65 83
66 84
67 85
68 86
69 87
70 89
71 90

List of values

[1, 2, 3, 5, 6, 7, 10, 11, 12, 13, 14, 15, 17, 18, 19, 20, 21, 22, 23, 26, 28, 29, 30, 31, 33, 34, 35, 37, 38, 39, 41, 42, 43, 44, 45, 46, 47, 50, 51, 52, 53, 55, 57, 58, 59, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 71, 73, 74, 75, 76, 77, 78, 79, 82, 83, 84, 85, 86, 87, 89, 90]

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

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