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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.

A181602 Primes p such that p-1 is a semiprime and p+2 is prime or prime squared.

Table of values

n a(n)
1 5
2 7
3 11
4 23
5 47
6 59
7 107
8 167
9 179
10 227
11 347
12 359
13 839
14 1019
15 1319
16 1367
17 1487
18 1619
19 2027
20 2207
21 2999
22 3119
23 3167
24 3467
25 4127
26 4259
27 4547
28 4787
29 4799
30 5099
31 5639
32 5879
33 6659
34 6779
35 6827
36 7559
37 8819
38 10007
39 10607
40 11699
41 12107
42 12539
43 14387
44 14867

List of values

[5, 7, 11, 23, 47, 59, 107, 167, 179, 227, 347, 359, 839, 1019, 1319, 1367, 1487, 1619, 2027, 2207, 2999, 3119, 3167, 3467, 4127, 4259, 4547, 4787, 4799, 5099, 5639, 5879, 6659, 6779, 6827, 7559, 8819, 10007, 10607, 11699, 12107, 12539, 14387, 14867]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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