A366769 - cp's OEIS frontend

A366769 Number of distinct prime divisors of A001045(n) (Jacobsthal numbers).

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	4
13	1
14	2
15	3
16	3
17	1
18	4
19	1
20	4
21	3
22	3
23	1
24	6
25	3
26	2
27	3
28	5
29	2
30	6
31	1
32	4
33	4
34	2
35	4
36	8
37	2
38	2
39	3
40	6
41	2
42	6
43	1
44	6
45	5
46	3
47	2
48	9
49	2
50	6
51	5
52	6
53	2
54	6
55	4
56	7
57	4
58	5
59	3
60	11
61	1
62	2
63	5
64	6
65	5
66	8
67	2
68	6
69	4
70	8
71	2
72	12
73	2
74	4
75	6
76	6
77	5
78	7
79	1
80	8
81	6
82	4
83	5
84	12
85	3
86	4

[0, 0, 1, 1, 1, 2, 1, 2, 2, 2, 1, 4, 1, 2, 3, 3, 1, 4, 1, 4, 3, 3, 1, 6, 3, 2, 3, 5, 2, 6, 1, 4, 4, 2, 4, 8, 2, 2, 3, 6, 2, 6, 1, 6, 5, 3, 2, 9, 2, 6, 5, 6, 2, 6, 4, 7, 4, 5, 3, 11, 1, 2, 5, 6, 5, 8, 2, 6, 4, 8, 2, 12, 2, 4, 6, 6, 5, 7, 1, 8, 6, 4, 5, 12, 3, 4]

cp's OEIS Frontend

A366769 Number of distinct prime divisors of A001045(n) (Jacobsthal numbers).

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	4
13	1
14	2
15	3
16	3
17	1
18	4
19	1
20	4
21	3
22	3
23	1
24	6
25	3
26	2
27	3
28	5
29	2
30	6
31	1
32	4
33	4
34	2
35	4
36	8
37	2
38	2
39	3
40	6
41	2
42	6
43	1
44	6
45	5
46	3
47	2
48	9
49	2
50	6
51	5
52	6
53	2
54	6
55	4
56	7
57	4
58	5
59	3
60	11
61	1
62	2
63	5
64	6
65	5
66	8
67	2
68	6
69	4
70	8
71	2
72	12
73	2
74	4
75	6
76	6
77	5
78	7
79	1
80	8
81	6
82	4
83	5
84	12
85	3
86	4

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	4
13	1
14	2
15	3
16	3
17	1
18	4
19	1
20	4
21	3
22	3
23	1
24	6
25	3
26	2
27	3
28	5
29	2
30	6
31	1
32	4
33	4
34	2
35	4
36	8
37	2
38	2
39	3
40	6
41	2
42	6
43	1
44	6
45	5
46	3
47	2
48	9
49	2
50	6
51	5
52	6
53	2
54	6
55	4
56	7
57	4
58	5
59	3
60	11
61	1
62	2
63	5
64	6
65	5
66	8
67	2
68	6
69	4
70	8
71	2
72	12
73	2
74	4
75	6
76	6
77	5
78	7
79	1
80	8
81	6
82	4
83	5
84	12
85	3
86	4

n	a(n)
1	0
2	0
3	1
4	1
5	1
6	2
7	1
8	2
9	2
10	2
11	1
12	4
13	1
14	2
15	3
16	3
17	1
18	4
19	1
20	4
21	3
22	3
23	1
24	6
25	3
26	2
27	3
28	5
29	2
30	6
31	1
32	4
33	4
34	2
35	4
36	8
37	2
38	2
39	3
40	6
41	2
42	6
43	1
44	6
45	5
46	3
47	2
48	9
49	2
50	6
51	5
52	6
53	2
54	6
55	4
56	7
57	4
58	5
59	3
60	11
61	1
62	2
63	5
64	6
65	5
66	8
67	2
68	6
69	4
70	8
71	2
72	12
73	2
74	4
75	6
76	6
77	5
78	7
79	1
80	8
81	6
82	4
83	5
84	12
85	3
86	4