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.

A384438 Composite numbers k such that ((2^k+1)/3)^k == 1 (mod k^2).

Table of values

n a(n)
1 341
2 1105
3 1387
4 1729
5 1771
6 2047
7 2465
8 2485
9 2701
10 2821
11 3277
12 3445
13 4033
14 4369
15 4681
16 5185
17 5461
18 6601
19 7957
20 8321
21 8911
22 9361
23 10261
24 10585
25 11305
26 11713
27 11891
28 13741
29 13747
30 13981
31 14491
32 15709
33 15841
34 16105
35 16705
36 18145
37 18721
38 19951
39 23377
40 28441
41 29341

List of values

[341, 1105, 1387, 1729, 1771, 2047, 2465, 2485, 2701, 2821, 3277, 3445, 4033, 4369, 4681, 5185, 5461, 6601, 7957, 8321, 8911, 9361, 10261, 10585, 11305, 11713, 11891, 13741, 13747, 13981, 14491, 15709, 15841, 16105, 16705, 18145, 18721, 19951, 23377, 28441, 29341]