A366664 - cp's OEIS frontend

A366664 Number of distinct prime divisors of 9^n + 1.

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

[1, 2, 2, 3, 3, 3, 3, 4, 2, 4, 3, 4, 6, 4, 4, 5, 2, 4, 4, 4, 5, 7, 5, 4, 4, 6, 4, 5, 6, 4, 7, 5, 2, 6, 5, 8, 8, 5, 6, 7, 5, 5, 10, 7, 6, 8, 4, 4, 6, 9, 6, 8, 7, 6, 9, 7, 9, 9, 5, 3, 11, 6, 4, 11, 6, 7, 9, 9, 7, 6, 9, 5, 6, 6, 6, 11, 4, 8, 7, 5, 4, 7, 5, 5, 11]

cp's OEIS Frontend

A366664 Number of distinct prime divisors of 9^n + 1.

Table of values

List of values

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

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

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