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.

A006049 Numbers k such that k and k+1 have the same number of distinct prime divisors.

Table of values

n a(n)
1 2
2 3
3 4
4 7
5 8
6 14
7 16
8 20
9 21
10 31
11 33
12 34
13 35
14 38
15 39
16 44
17 45
18 50
19 51
20 54
21 55
22 56
23 57
24 62
25 68
26 74
27 75
28 76
29 85
30 86
31 87
32 91
33 92
34 93
35 94
36 95
37 98
38 99
39 111
40 115
41 116
42 117
43 118
44 122
45 123
46 127
47 133
48 134
49 135
50 141
51 142
52 143
53 144
54 145
55 146
56 147
57 152
58 158
59 159
60 160
61 161
62 171
63 175

List of values

[2, 3, 4, 7, 8, 14, 16, 20, 21, 31, 33, 34, 35, 38, 39, 44, 45, 50, 51, 54, 55, 56, 57, 62, 68, 74, 75, 76, 85, 86, 87, 91, 92, 93, 94, 95, 98, 99, 111, 115, 116, 117, 118, 122, 123, 127, 133, 134, 135, 141, 142, 143, 144, 145, 146, 147, 152, 158, 159, 160, 161, 171, 175]

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

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