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.

A002312 Arc-cotangent reducible numbers or non-Størmer numbers: largest prime factor of k^2 + 1 is less than 2*k.

Table of values

n a(n)
1 3
2 7
3 8
4 13
5 17
6 18
7 21
8 30
9 31
10 32
11 38
12 41
13 43
14 46
15 47
16 50
17 55
18 57
19 68
20 70
21 72
22 73
23 75
24 76
25 83
26 91
27 93
28 98
29 99
30 100
31 105
32 111
33 112
34 117
35 119
36 122
37 123
38 128
39 129
40 132
41 133
42 142
43 144
44 155
45 157
46 162
47 172
48 173
49 174
50 177
51 182
52 183
53 185
54 187
55 189
56 191
57 192
58 193
59 200

List of values

[3, 7, 8, 13, 17, 18, 21, 30, 31, 32, 38, 41, 43, 46, 47, 50, 55, 57, 68, 70, 72, 73, 75, 76, 83, 91, 93, 98, 99, 100, 105, 111, 112, 117, 119, 122, 123, 128, 129, 132, 133, 142, 144, 155, 157, 162, 172, 173, 174, 177, 182, 183, 185, 187, 189, 191, 192, 193, 200]