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.

A122781 Nonprimes n such that 4^n==4 (mod n).

Table of values

n a(n)
1 1
2 4
3 6
4 12
5 15
6 28
7 66
8 85
9 91
10 186
11 276
12 341
13 435
14 451
15 532
16 561
17 645
18 703
19 946
20 1068
21 1105
22 1247
23 1271
24 1387
25 1581
26 1695
27 1729
28 1891
29 1905
30 2044
31 2046
32 2047
33 2071
34 2465
35 2701
36 2821
37 2926
38 3133
39 3277
40 3367
41 3683
42 4033
43 4369
44 4371
45 4681
46 4795

List of values

[1, 4, 6, 12, 15, 28, 66, 85, 91, 186, 276, 341, 435, 451, 532, 561, 645, 703, 946, 1068, 1105, 1247, 1271, 1387, 1581, 1695, 1729, 1891, 1905, 2044, 2046, 2047, 2071, 2465, 2701, 2821, 2926, 3133, 3277, 3367, 3683, 4033, 4369, 4371, 4681, 4795]