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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.

A266845 Primes p such that p+-2 and p+-4 are semiprimes.

Table of values

n a(n)
1 53
2 89
3 449
4 683
5 1259
6 4283
7 6803
8 11789
9 12781
10 13553
11 16561
12 18593
13 18899
14 20287
15 29303
16 35099
17 36217
18 37619
19 52163
20 54181
21 64763
22 65213
23 67103
24 103769
25 115831
26 116009
27 125551
28 126541
29 147997
30 154043
31 155161
32 155609
33 166013
34 173699
35 181943
36 188911
37 190261
38 196613

List of values

[53, 89, 449, 683, 1259, 4283, 6803, 11789, 12781, 13553, 16561, 18593, 18899, 20287, 29303, 35099, 36217, 37619, 52163, 54181, 64763, 65213, 67103, 103769, 115831, 116009, 125551, 126541, 147997, 154043, 155161, 155609, 166013, 173699, 181943, 188911, 190261, 196613]

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

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