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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.

A216301 Numbers k such that 10k+7 is composite but 10k+1, 10k+3, 10k+9 are all prime.

Table of values

n a(n)
1 7
2 43
3 103
4 106
5 145
6 238
7 271
8 409
9 472
10 544
11 574
12 670
13 721
14 904
15 934
16 1009
17 1183
18 1204
19 1261
20 1282
21 1372
22 1636
23 1669
24 1729
25 1792
26 1921
27 1975
28 2002
29 2149
30 2152
31 2254
32 2320
33 2437
34 2560
35 2593
36 2611
37 2695
38 2779
39 2857
40 2866
41 2875
42 3085
43 3115
44 3118
45 3256

List of values

[7, 43, 103, 106, 145, 238, 271, 409, 472, 544, 574, 670, 721, 904, 934, 1009, 1183, 1204, 1261, 1282, 1372, 1636, 1669, 1729, 1792, 1921, 1975, 2002, 2149, 2152, 2254, 2320, 2437, 2560, 2593, 2611, 2695, 2779, 2857, 2866, 2875, 3085, 3115, 3118, 3256]

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

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