A057952 - cp's OEIS frontend

A057952 Number of prime factors of 9^n - 1 (counted with multiplicity).

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

[3, 5, 5, 7, 6, 8, 5, 10, 8, 10, 7, 11, 5, 9, 11, 12, 8, 12, 7, 13, 11, 11, 6, 17, 10, 9, 13, 13, 9, 17, 8, 14, 12, 12, 11, 16, 8, 11, 15, 18, 8, 18, 6, 16, 19, 10, 10, 21, 12, 18, 15, 13, 8, 18, 15, 19, 15, 13, 7, 24, 7, 13, 19, 16, 12, 18, 8, 17, 15, 20, 9, 24, 9, 13, 22, 17, 13, 22]

cp's OEIS Frontend

A057952 Number of prime factors of 9^n - 1 (counted with multiplicity).

Table of values

List of values

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

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

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