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.

A323550 Numbers that can be expressed as (p - 1)*(q - 1) + 1, where p < q are primes.

Table of values

n a(n)
1 3
2 5
3 7
4 9
5 11
6 13
7 17
8 19
9 21
10 23
11 25
12 29
13 31
14 33
15 37
16 41
17 43
18 45
19 47
20 49
21 53
22 57
23 59
24 61
25 65
26 67
27 71
28 73
29 79
30 81
31 83
32 85
33 89
34 93
35 97
36 101
37 103
38 105
39 107
40 109
41 113
42 117
43 121
44 127
45 131
46 133
47 137
48 139
49 141
50 145
51 149
52 151
53 157
54 161
55 163
56 165
57 167
58 169
59 173
60 177
61 179
62 181
63 185
64 191
65 193
66 197
67 199
68 201
69 205
70 209

List of values

[3, 5, 7, 9, 11, 13, 17, 19, 21, 23, 25, 29, 31, 33, 37, 41, 43, 45, 47, 49, 53, 57, 59, 61, 65, 67, 71, 73, 79, 81, 83, 85, 89, 93, 97, 101, 103, 105, 107, 109, 113, 117, 121, 127, 131, 133, 137, 139, 141, 145, 149, 151, 157, 161, 163, 165, 167, 169, 173, 177, 179, 181, 185, 191, 193, 197, 199, 201, 205, 209]