A055690 - cp's OEIS frontend

A055690 Numbers k such that 7^k == -1 (mod k-1).

n	a(n)
1	2
2	3
3	5
4	6
5	9
6	26
7	45
8	66
9	87
10	345
11	765
12	906
13	3926
14	8405
15	11766
16	23805
17	35145
18	42966
19	59685
20	95289
21	317250
22	413325
23	416757
24	722745
25	770066
26	890825
27	938457
28	1325826
29	1921986
30	3315378
31	3675555
32	5299250
33	6791445
34	6899685
35	9371826
36	10892313

[2, 3, 5, 6, 9, 26, 45, 66, 87, 345, 765, 906, 3926, 8405, 11766, 23805, 35145, 42966, 59685, 95289, 317250, 413325, 416757, 722745, 770066, 890825, 938457, 1325826, 1921986, 3315378, 3675555, 5299250, 6791445, 6899685, 9371826, 10892313]

cp's OEIS Frontend

A055690 Numbers k such that 7^k == -1 (mod k-1).

Table of values

List of values