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.

A121658 Primes neither of the n^2+1 nor n^2+n+1 form.

Table of values

n a(n)
1 11
2 19
3 23
4 29
5 41
6 47
7 53
8 59
9 61
10 67
11 71
12 79
13 83
14 89
15 97
16 103
17 107
18 109
19 113
20 127
21 131
22 137
23 139
24 149
25 151
26 163
27 167
28 173
29 179
30 181
31 191
32 193
33 199
34 223
35 227
36 229
37 233
38 239
39 251
40 263
41 269
42 271
43 277
44 281
45 283
46 293
47 311
48 313
49 317
50 331
51 337
52 347
53 349

List of values

[11, 19, 23, 29, 41, 47, 53, 59, 61, 67, 71, 79, 83, 89, 97, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 163, 167, 173, 179, 181, 191, 193, 199, 223, 227, 229, 233, 239, 251, 263, 269, 271, 277, 281, 283, 293, 311, 313, 317, 331, 337, 347, 349]