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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.

A165354 Primes p such that p+(p^2-1)/8 is an integer but not a prime number.

Table of values

n a(n)
1 3
2 5
3 11
4 13
5 19
6 29
7 37
8 43
9 47
10 53
11 59
12 61
13 67
14 83
15 89
16 97
17 101
18 107
19 109
20 131
21 137
22 139
23 149
24 157
25 163
26 167
27 173
28 179
29 181
30 193
31 197
32 199
33 211
34 223
35 227
36 229
37 239
38 241
39 251
40 263
41 269
42 271
43 277
44 283
45 293
46 307
47 313
48 317
49 331
50 347
51 349
52 353
53 359
54 373
55 379
56 389

List of values

[3, 5, 11, 13, 19, 29, 37, 43, 47, 53, 59, 61, 67, 83, 89, 97, 101, 107, 109, 131, 137, 139, 149, 157, 163, 167, 173, 179, 181, 193, 197, 199, 211, 223, 227, 229, 239, 241, 251, 263, 269, 271, 277, 283, 293, 307, 313, 317, 331, 347, 349, 353, 359, 373, 379, 389]