A211454 - cp's OEIS frontend

A211454 (p-1)/x, where p = prime(n) and x = ord(9,p), the smallest positive integer such that 9^x == 1 mod p.

n	a(n)
1	1
2	0
3	2
4	2
5	2
6	4
7	2
8	2
9	2
10	2
11	2
12	4
13	10
14	2
15	2
16	2
17	2
18	12
19	6
20	2
21	12
22	2
23	2
24	2
25	4
26	2
27	6
28	2
29	4
30	2
31	2
32	2
33	2
34	2
35	2
36	6
37	4
38	2
39	2
40	2
41	2
42	4
43	2
44	24
45	2
46	2
47	2
48	2
49	2
50	4
51	2
52	2
53	4
54	2
55	2
56	2
57	2
58	18
59	4
60	2
61	2
62	2
63	18
64	2
65	8
66	2
67	2
68	4
69	2
70	4
71	2
72	2
73	6
74	4
75	2
76	2
77	2
78	4
79	2
80	4
81	2
82	4
83	10
84	16

[1, 0, 2, 2, 2, 4, 2, 2, 2, 2, 2, 4, 10, 2, 2, 2, 2, 12, 6, 2, 12, 2, 2, 2, 4, 2, 6, 2, 4, 2, 2, 2, 2, 2, 2, 6, 4, 2, 2, 2, 2, 4, 2, 24, 2, 2, 2, 2, 2, 4, 2, 2, 4, 2, 2, 2, 2, 18, 4, 2, 2, 2, 18, 2, 8, 2, 2, 4, 2, 4, 2, 2, 6, 4, 2, 2, 2, 4, 2, 4, 2, 4, 10, 16]

cp's OEIS Frontend

A211454 (p-1)/x, where p = prime(n) and x = ord(9,p), the smallest positive integer such that 9^x == 1 mod p.

Table of values

List of values

n	a(n)
1	1
2	0
3	2
4	2
5	2
6	4
7	2
8	2
9	2
10	2
11	2
12	4
13	10
14	2
15	2
16	2
17	2
18	12
19	6
20	2
21	12
22	2
23	2
24	2
25	4
26	2
27	6
28	2
29	4
30	2
31	2
32	2
33	2
34	2
35	2
36	6
37	4
38	2
39	2
40	2
41	2
42	4
43	2
44	24
45	2
46	2
47	2
48	2
49	2
50	4
51	2
52	2
53	4
54	2
55	2
56	2
57	2
58	18
59	4
60	2
61	2
62	2
63	18
64	2
65	8
66	2
67	2
68	4
69	2
70	4
71	2
72	2
73	6
74	4
75	2
76	2
77	2
78	4
79	2
80	4
81	2
82	4
83	10
84	16

n	a(n)
1	1
2	0
3	2
4	2
5	2
6	4
7	2
8	2
9	2
10	2
11	2
12	4
13	10
14	2
15	2
16	2
17	2
18	12
19	6
20	2
21	12
22	2
23	2
24	2
25	4
26	2
27	6
28	2
29	4
30	2
31	2
32	2
33	2
34	2
35	2
36	6
37	4
38	2
39	2
40	2
41	2
42	4
43	2
44	24
45	2
46	2
47	2
48	2
49	2
50	4
51	2
52	2
53	4
54	2
55	2
56	2
57	2
58	18
59	4
60	2
61	2
62	2
63	18
64	2
65	8
66	2
67	2
68	4
69	2
70	4
71	2
72	2
73	6
74	4
75	2
76	2
77	2
78	4
79	2
80	4
81	2
82	4
83	10
84	16

n	a(n)
1	1
2	0
3	2
4	2
5	2
6	4
7	2
8	2
9	2
10	2
11	2
12	4
13	10
14	2
15	2
16	2
17	2
18	12
19	6
20	2
21	12
22	2
23	2
24	2
25	4
26	2
27	6
28	2
29	4
30	2
31	2
32	2
33	2
34	2
35	2
36	6
37	4
38	2
39	2
40	2
41	2
42	4
43	2
44	24
45	2
46	2
47	2
48	2
49	2
50	4
51	2
52	2
53	4
54	2
55	2
56	2
57	2
58	18
59	4
60	2
61	2
62	2
63	18
64	2
65	8
66	2
67	2
68	4
69	2
70	4
71	2
72	2
73	6
74	4
75	2
76	2
77	2
78	4
79	2
80	4
81	2
82	4
83	10
84	16