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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.

A176140 Semiprimes s such that both s + 3 and s - 3 are primes.

Table of values

n a(n)
1 10
2 14
3 26
4 34
5 86
6 106
7 134
8 194
9 226
10 254
11 274
12 314
13 334
14 386
15 446
16 566
17 974
18 1094
19 1126
20 1226
21 1234
22 1286
23 1294
24 1486
25 1546
26 1874
27 2066
28 2374
29 2386
30 2554
31 2854
32 2906
33 2966
34 3086
35 3166
36 3254
37 3326
38 3466
39 3694
40 4054
41 4286
42 4594
43 4786
44 4874
45 4934
46 4954

List of values

[10, 14, 26, 34, 86, 106, 134, 194, 226, 254, 274, 314, 334, 386, 446, 566, 974, 1094, 1126, 1226, 1234, 1286, 1294, 1486, 1546, 1874, 2066, 2374, 2386, 2554, 2854, 2906, 2966, 3086, 3166, 3254, 3326, 3466, 3694, 4054, 4286, 4594, 4786, 4874, 4934, 4954]

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

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