A057953 - cp's OEIS frontend

A057953 Number of prime factors of 8^n - 1 (counted with multiplicity).

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

[1, 3, 2, 5, 3, 6, 4, 7, 3, 7, 4, 10, 4, 8, 6, 10, 5, 9, 4, 13, 7, 9, 4, 14, 7, 8, 6, 14, 6, 13, 3, 13, 8, 11, 11, 15, 6, 9, 9, 17, 5, 14, 5, 15, 10, 9, 6, 19, 7, 14, 8, 18, 8, 16, 10, 19, 7, 11, 6, 24, 5, 8, 10, 16, 8, 17, 6, 20, 9, 22, 7, 21, 7, 13, 14, 17, 10, 16, 8, 23, 10, 12, 5, 24]

cp's OEIS Frontend

A057953 Number of prime factors of 8^n - 1 (counted with multiplicity).

Table of values

List of values

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

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

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