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.

A255346 Numbers k such that k and k+1 both have at least two distinct prime factors.

Table of values

n a(n)
1 14
2 20
3 21
4 33
5 34
6 35
7 38
8 39
9 44
10 45
11 50
12 51
13 54
14 55
15 56
16 57
17 62
18 65
19 68
20 69
21 74
22 75
23 76
24 77
25 84
26 85
27 86
28 87
29 90
30 91
31 92
32 93
33 94
34 95
35 98
36 99
37 104
38 105
39 110
40 111
41 114
42 115
43 116
44 117
45 118
46 119
47 122
48 123
49 129
50 132
51 133
52 134
53 135
54 140
55 141
56 142
57 143
58 144
59 145
60 146
61 147
62 152
63 153
64 154

List of values

[14, 20, 21, 33, 34, 35, 38, 39, 44, 45, 50, 51, 54, 55, 56, 57, 62, 65, 68, 69, 74, 75, 76, 77, 84, 85, 86, 87, 90, 91, 92, 93, 94, 95, 98, 99, 104, 105, 110, 111, 114, 115, 116, 117, 118, 119, 122, 123, 129, 132, 133, 134, 135, 140, 141, 142, 143, 144, 145, 146, 147, 152, 153, 154]

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

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