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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.

A109959 Numbers n such that concatenating n and the sum of primes dividing n (counting multiplicity) produces a prime.

Table of values

n a(n)
1 10
2 12
3 14
4 22
5 38
6 82
7 90
8 92
9 96
10 116
11 117
12 122
13 134
14 147
15 158
16 165
17 178
18 198
19 210
20 218
21 236
22 262
23 274
24 304
25 314
26 332
27 333
28 352
29 358
30 360
31 369
32 387
33 390
34 399
35 420
36 448
37 454
38 478
39 482
40 496
41 522
42 561
43 562
44 603
45 605
46 622
47 637
48 639
49 640
50 651
51 694
52 704
53 714
54 720

List of values

[10, 12, 14, 22, 38, 82, 90, 92, 96, 116, 117, 122, 134, 147, 158, 165, 178, 198, 210, 218, 236, 262, 274, 304, 314, 332, 333, 352, 358, 360, 369, 387, 390, 399, 420, 448, 454, 478, 482, 496, 522, 561, 562, 603, 605, 622, 637, 639, 640, 651, 694, 704, 714, 720]

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

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