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.

A138218 Numbers k such that 180k^2 + 1 is prime.

Table of values

n a(n)
1 1
2 3
3 6
4 7
5 14
6 17
7 18
8 22
9 24
10 25
11 27
12 28
13 29
14 31
15 32
16 41
17 46
18 48
19 50
20 52
21 55
22 59
23 62
24 64
25 66
26 67
27 76
28 77
29 83
30 85
31 87
32 88
33 92
34 94
35 95
36 97
37 102
38 106
39 108
40 118
41 123
42 134
43 136
44 139
45 140
46 141
47 147
48 148
49 154
50 155
51 157
52 162
53 165
54 167
55 179
56 181
57 192
58 193
59 199
60 202
61 203
62 207

List of values

[1, 3, 6, 7, 14, 17, 18, 22, 24, 25, 27, 28, 29, 31, 32, 41, 46, 48, 50, 52, 55, 59, 62, 64, 66, 67, 76, 77, 83, 85, 87, 88, 92, 94, 95, 97, 102, 106, 108, 118, 123, 134, 136, 139, 140, 141, 147, 148, 154, 155, 157, 162, 165, 167, 179, 181, 192, 193, 199, 202, 203, 207]