A057956 - cp's OEIS frontend

A057956 Number of prime factors of 5^n - 1 (counted with multiplicity).

n	a(n)
1	2
2	4
3	3
4	6
5	4
6	7
7	3
8	8
9	5
10	7
11	3
12	10
13	3
14	7
15	7
16	11
17	4
18	11
19	5
20	11
21	6
22	8
23	4
24	13
25	8
26	7
27	9
28	10
29	5
30	14
31	4
32	14
33	6
34	8
35	9
36	16
37	5
38	10
39	6
40	15
41	4
42	16
43	4
44	12
45	12
46	8
47	3
48	17
49	4
50	13
51	8
52	12
53	5
54	19
55	10
56	13
57	7
58	9
59	4
60	21
61	5
62	9
63	11
64	18
65	8
66	15
67	7
68	14
69	9
70	16
71	4
72	22
73	5
74	10
75	16
76	14
77	7
78	14
79	5
80	20
81	11
82	10
83	5
84	22
85	9
86	10

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

cp's OEIS Frontend

A057956 Number of prime factors of 5^n - 1 (counted with multiplicity).

Table of values

List of values

n	a(n)
1	2
2	4
3	3
4	6
5	4
6	7
7	3
8	8
9	5
10	7
11	3
12	10
13	3
14	7
15	7
16	11
17	4
18	11
19	5
20	11
21	6
22	8
23	4
24	13
25	8
26	7
27	9
28	10
29	5
30	14
31	4
32	14
33	6
34	8
35	9
36	16
37	5
38	10
39	6
40	15
41	4
42	16
43	4
44	12
45	12
46	8
47	3
48	17
49	4
50	13
51	8
52	12
53	5
54	19
55	10
56	13
57	7
58	9
59	4
60	21
61	5
62	9
63	11
64	18
65	8
66	15
67	7
68	14
69	9
70	16
71	4
72	22
73	5
74	10
75	16
76	14
77	7
78	14
79	5
80	20
81	11
82	10
83	5
84	22
85	9
86	10

n	a(n)
1	2
2	4
3	3
4	6
5	4
6	7
7	3
8	8
9	5
10	7
11	3
12	10
13	3
14	7
15	7
16	11
17	4
18	11
19	5
20	11
21	6
22	8
23	4
24	13
25	8
26	7
27	9
28	10
29	5
30	14
31	4
32	14
33	6
34	8
35	9
36	16
37	5
38	10
39	6
40	15
41	4
42	16
43	4
44	12
45	12
46	8
47	3
48	17
49	4
50	13
51	8
52	12
53	5
54	19
55	10
56	13
57	7
58	9
59	4
60	21
61	5
62	9
63	11
64	18
65	8
66	15
67	7
68	14
69	9
70	16
71	4
72	22
73	5
74	10
75	16
76	14
77	7
78	14
79	5
80	20
81	11
82	10
83	5
84	22
85	9
86	10

n	a(n)
1	2
2	4
3	3
4	6
5	4
6	7
7	3
8	8
9	5
10	7
11	3
12	10
13	3
14	7
15	7
16	11
17	4
18	11
19	5
20	11
21	6
22	8
23	4
24	13
25	8
26	7
27	9
28	10
29	5
30	14
31	4
32	14
33	6
34	8
35	9
36	16
37	5
38	10
39	6
40	15
41	4
42	16
43	4
44	12
45	12
46	8
47	3
48	17
49	4
50	13
51	8
52	12
53	5
54	19
55	10
56	13
57	7
58	9
59	4
60	21
61	5
62	9
63	11
64	18
65	8
66	15
67	7
68	14
69	9
70	16
71	4
72	22
73	5
74	10
75	16
76	14
77	7
78	14
79	5
80	20
81	11
82	10
83	5
84	22
85	9
86	10