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.

A343027 Numbers whose concatenation of prime factors in increasing order is a prime number.

Table of values

n a(n)
1 2
2 3
3 5
4 6
5 7
6 11
7 12
8 13
9 17
10 18
11 19
12 21
13 22
14 23
15 28
16 29
17 31
18 33
19 37
20 39
21 41
22 43
23 46
24 47
25 51
26 52
27 53
28 54
29 58
30 59
31 61
32 63
33 66
34 67
35 70
36 71
37 73
38 79
39 82
40 83
41 84
42 89
43 93
44 97
45 98
46 101
47 103
48 107
49 109
50 111
51 113
52 115
53 117
54 127
55 131
56 133
57 137
58 139
59 141
60 142
61 148
62 149

List of values

[2, 3, 5, 6, 7, 11, 12, 13, 17, 18, 19, 21, 22, 23, 28, 29, 31, 33, 37, 39, 41, 43, 46, 47, 51, 52, 53, 54, 58, 59, 61, 63, 66, 67, 70, 71, 73, 79, 82, 83, 84, 89, 93, 97, 98, 101, 103, 107, 109, 111, 113, 115, 117, 127, 131, 133, 137, 139, 141, 142, 148, 149]

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

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