cp's OEIS Frontend

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.

A357746 Primes p such that the least k for which k*p + 1 is prime is also the least k for which k*p - 1 is prime.

Table of values

n a(n)
1 47
2 103
3 107
4 283
5 313
6 347
7 397
8 773
9 787
10 907
11 1051
12 1117
13 1319
14 1433
15 1823
16 2027
17 2153
18 2203
19 2287
20 2333
21 2347
22 2381
23 2909
24 3221
25 3257
26 3673
27 3923
28 3929
29 4129
30 4153
31 4217
32 4547
33 4597
34 4657
35 4721
36 4969
37 5023
38 5387
39 5407
40 5693
41 5717
42 5827
43 5881
44 6373
45 6781
46 6863
47 6997

List of values

[47, 103, 107, 283, 313, 347, 397, 773, 787, 907, 1051, 1117, 1319, 1433, 1823, 2027, 2153, 2203, 2287, 2333, 2347, 2381, 2909, 3221, 3257, 3673, 3923, 3929, 4129, 4153, 4217, 4547, 4597, 4657, 4721, 4969, 5023, 5387, 5407, 5693, 5717, 5827, 5881, 6373, 6781, 6863, 6997]