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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.

A139407 Numbers k such that 8*k+3 and 8*k+7 are primes.

Table of values

n a(n)
1 2
2 5
3 8
4 20
5 38
6 47
7 62
8 80
9 92
10 107
11 110
12 113
13 185
14 197
15 233
16 260
17 275
18 293
19 317
20 332
21 335
22 338
23 377
24 395
25 398
26 488
27 500
28 653
29 668
30 722
31 740
32 755
33 818
34 863
35 905
36 950
37 962
38 965
39 1052
40 1055
41 1067
42 1097
43 1100
44 1193
45 1202
46 1217
47 1223
48 1235
49 1262
50 1280
51 1283

List of values

[2, 5, 8, 20, 38, 47, 62, 80, 92, 107, 110, 113, 185, 197, 233, 260, 275, 293, 317, 332, 335, 338, 377, 395, 398, 488, 500, 653, 668, 722, 740, 755, 818, 863, 905, 950, 962, 965, 1052, 1055, 1067, 1097, 1100, 1193, 1202, 1217, 1223, 1235, 1262, 1280, 1283]

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

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