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.

A280864 Lexicographically earliest infinite sequence of distinct positive terms such that, for any prime p, any run of consecutive multiples of p has length exactly 2.

Table of values

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

List of values

[1, 2, 4, 3, 6, 8, 5, 10, 12, 9, 7, 14, 16, 11, 22, 18, 15, 20, 24, 21, 28, 26, 13, 17, 34, 30, 45, 19, 38, 32, 23, 46, 36, 27, 25, 35, 42, 48, 29, 58, 40, 55, 33, 39, 52, 44, 77, 49, 31, 62, 50, 65, 78, 54, 37, 74, 56, 63, 51, 68, 60, 75, 41, 82, 64, 43, 86]

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

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