A128393 - cp's OEIS frontend

A128393 Numbers k such that k^2 divides 13^k - 1.

n	a(n)
1	1
2	2
3	3
4	4
5	6
6	12
7	14
8	20
9	28
10	42
11	60
12	68
13	84
14	140
15	183
16	204
17	220
18	340
19	366
20	406
21	420
22	476
23	660
24	732
25	812
26	942
27	1020
28	1218
29	1428
30	1540
31	1806
32	1860
33	1884
34	2380
35	2436
36	2562
37	3612
38	3660
39	3740
40	4060
41	4620
42	5060
43	5124
44	6594
45	7004
46	7140
47	8420
48	9420
49	9940
50	11220

[1, 2, 3, 4, 6, 12, 14, 20, 28, 42, 60, 68, 84, 140, 183, 204, 220, 340, 366, 406, 420, 476, 660, 732, 812, 942, 1020, 1218, 1428, 1540, 1806, 1860, 1884, 2380, 2436, 2562, 3612, 3660, 3740, 4060, 4620, 5060, 5124, 6594, 7004, 7140, 8420, 9420, 9940, 11220]

cp's OEIS Frontend

A128393 Numbers k such that k^2 divides 13^k - 1.

Table of values

List of values