A366681 - cp's OEIS frontend

A366681 Number of distinct prime divisors of 11^n - 1.

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

[2, 3, 4, 4, 3, 6, 4, 5, 5, 5, 4, 9, 4, 6, 6, 7, 3, 8, 3, 7, 9, 9, 5, 12, 6, 8, 6, 10, 4, 11, 5, 9, 9, 7, 7, 12, 6, 8, 12, 10, 9, 13, 4, 12, 8, 10, 5, 18, 7, 10, 9, 10, 6, 11, 9, 15, 7, 8, 5, 16, 5, 10, 15, 12, 7, 19, 6, 12, 10, 15, 7, 18, 3, 9, 13, 11, 8, 20]

cp's OEIS Frontend

A366681 Number of distinct prime divisors of 11^n - 1.

Table of values

List of values

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

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

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