cp's OEIS Frontend

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.

A375929 Numbers k such that A002808(k+1) = A002808(k) + 1. In other words, the k-th composite number is 1 less than the next.

Table of values

n a(n)
1 3
2 4
3 7
4 8
5 11
6 12
7 14
8 15
9 16
10 17
11 20
12 21
13 22
14 23
15 25
16 26
17 29
18 30
19 32
20 33
21 34
22 35
23 37
24 38
25 39
26 40
27 43
28 44
29 45
30 46
31 48
32 49
33 52
34 53
35 54
36 55
37 57
38 58
39 60
40 61
41 62
42 63
43 65
44 66
45 67
46 68
47 69
48 70
49 72
50 73
51 76
52 77
53 80
54 81
55 83
56 84
57 85
58 86
59 87
60 88
61 89
62 90
63 91
64 92
65 93
66 94

List of values

[3, 4, 7, 8, 11, 12, 14, 15, 16, 17, 20, 21, 22, 23, 25, 26, 29, 30, 32, 33, 34, 35, 37, 38, 39, 40, 43, 44, 45, 46, 48, 49, 52, 53, 54, 55, 57, 58, 60, 61, 62, 63, 65, 66, 67, 68, 69, 70, 72, 73, 76, 77, 80, 81, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94]

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

Content is available under The OEIS End-User License Agreement.