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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.

A225856 Primes p such that p^2 + 1 is squarefree.

Table of values

n a(n)
1 2
2 3
3 5
4 11
5 13
6 17
7 19
8 23
9 29
10 31
11 37
12 47
13 53
14 59
15 61
16 67
17 71
18 73
19 79
20 83
21 89
22 97
23 101
24 103
25 109
26 113
27 127
28 131
29 137
30 139
31 149
32 151
33 163
34 167
35 173
36 179
37 181
38 191
39 197
40 199
41 211
42 223
43 227
44 229
45 233
46 241
47 263
48 269
49 271
50 277
51 281
52 283
53 311
54 313
55 317
56 331
57 337

List of values

[2, 3, 5, 11, 13, 17, 19, 23, 29, 31, 37, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 109, 113, 127, 131, 137, 139, 149, 151, 163, 167, 173, 179, 181, 191, 197, 199, 211, 223, 227, 229, 233, 241, 263, 269, 271, 277, 281, 283, 311, 313, 317, 331, 337]