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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.

A091554 Primes p such that k = 2p is the smallest positive solution to the equation sigma(p+k) = sigma(p) + sigma(k).

Table of values

n a(n)
1 7
2 11
3 13
4 17
5 19
6 23
7 31
8 53
9 59
10 73
11 79
12 89
13 97
14 103
15 109
16 113
17 137
18 139
19 149
20 157
21 163
22 181
23 193
24 211
25 223
26 227
27 269
28 281
29 293
30 313
31 331
32 337
33 373
34 389
35 397
36 409
37 419
38 421
39 433
40 463
41 467
42 487
43 499
44 509
45 521
46 523
47 541
48 547
49 571
50 599
51 601
52 617
53 631
54 641
55 643

List of values

[7, 11, 13, 17, 19, 23, 31, 53, 59, 73, 79, 89, 97, 103, 109, 113, 137, 139, 149, 157, 163, 181, 193, 211, 223, 227, 269, 281, 293, 313, 331, 337, 373, 389, 397, 409, 419, 421, 433, 463, 467, 487, 499, 509, 521, 523, 541, 547, 571, 599, 601, 617, 631, 641, 643]

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

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