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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.

A118724 Chen primes for which the multiplicative digital root is also a Chen prime.

Table of values

n a(n)
1 2
2 3
3 5
4 7
5 13
6 17
7 31
8 37
9 53
10 71
11 113
12 131
13 137
14 157
15 211
16 311
17 317
18 359
19 389
20 431
21 557
22 571
23 751
24 827
25 839
26 953
27 983
28 1117
29 1151
30 1297
31 1367
32 1511
33 1553
34 1621
35 1637
36 1759
37 2111
38 2179
39 2213
40 2269
41 2339
42 2393
43 2699
44 2719
45 2969
46 2971
47 3167
48 3221
49 3329
50 3511

List of values

[2, 3, 5, 7, 13, 17, 31, 37, 53, 71, 113, 131, 137, 157, 211, 311, 317, 359, 389, 431, 557, 571, 751, 827, 839, 953, 983, 1117, 1151, 1297, 1367, 1511, 1553, 1621, 1637, 1759, 2111, 2179, 2213, 2269, 2339, 2393, 2699, 2719, 2969, 2971, 3167, 3221, 3329, 3511]

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

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