A138789 - cp's OEIS frontend

A138789 a(n) = number of distinct prime divisors of A104759(n).

n	a(n)
1	0
2	2
3	2
4	2
5	3
6	2
7	2
8	3
9	3
10	2
11	2
12	4
13	4
14	2
15	5
16	4
17	2
18	3
19	7
20	4
21	4
22	3
23	3
24	2
25	5
26	3
27	5
28	2
29	3
30	6
31	6
32	3
33	3
34	5
35	5
36	7
37	3
38	3
39	4
40	3
41	3
42	4
43	4
44	5
45	3
46	5
47	7
48	3
49	5
50	6
51	6
52	5
53	4
54	5
55	2
56	6
57	4
58	6
59	4
60	4
61	7
62	6
63	5
64	5
65	6
66	9
67	5
68	5
69	7
70	5
71	5
72	5
73	5
74	6
75	6
76	4
77	4
78	4
79	5
80	8
81	7
82	6
83	4
84	5
85	4
86	4
87	9

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

cp's OEIS Frontend

A138789 a(n) = number of distinct prime divisors of A104759(n).

Table of values

List of values

n	a(n)
1	0
2	2
3	2
4	2
5	3
6	2
7	2
8	3
9	3
10	2
11	2
12	4
13	4
14	2
15	5
16	4
17	2
18	3
19	7
20	4
21	4
22	3
23	3
24	2
25	5
26	3
27	5
28	2
29	3
30	6
31	6
32	3
33	3
34	5
35	5
36	7
37	3
38	3
39	4
40	3
41	3
42	4
43	4
44	5
45	3
46	5
47	7
48	3
49	5
50	6
51	6
52	5
53	4
54	5
55	2
56	6
57	4
58	6
59	4
60	4
61	7
62	6
63	5
64	5
65	6
66	9
67	5
68	5
69	7
70	5
71	5
72	5
73	5
74	6
75	6
76	4
77	4
78	4
79	5
80	8
81	7
82	6
83	4
84	5
85	4
86	4
87	9

n	a(n)
1	0
2	2
3	2
4	2
5	3
6	2
7	2
8	3
9	3
10	2
11	2
12	4
13	4
14	2
15	5
16	4
17	2
18	3
19	7
20	4
21	4
22	3
23	3
24	2
25	5
26	3
27	5
28	2
29	3
30	6
31	6
32	3
33	3
34	5
35	5
36	7
37	3
38	3
39	4
40	3
41	3
42	4
43	4
44	5
45	3
46	5
47	7
48	3
49	5
50	6
51	6
52	5
53	4
54	5
55	2
56	6
57	4
58	6
59	4
60	4
61	7
62	6
63	5
64	5
65	6
66	9
67	5
68	5
69	7
70	5
71	5
72	5
73	5
74	6
75	6
76	4
77	4
78	4
79	5
80	8
81	7
82	6
83	4
84	5
85	4
86	4
87	9

n	a(n)
1	0
2	2
3	2
4	2
5	3
6	2
7	2
8	3
9	3
10	2
11	2
12	4
13	4
14	2
15	5
16	4
17	2
18	3
19	7
20	4
21	4
22	3
23	3
24	2
25	5
26	3
27	5
28	2
29	3
30	6
31	6
32	3
33	3
34	5
35	5
36	7
37	3
38	3
39	4
40	3
41	3
42	4
43	4
44	5
45	3
46	5
47	7
48	3
49	5
50	6
51	6
52	5
53	4
54	5
55	2
56	6
57	4
58	6
59	4
60	4
61	7
62	6
63	5
64	5
65	6
66	9
67	5
68	5
69	7
70	5
71	5
72	5
73	5
74	6
75	6
76	4
77	4
78	4
79	5
80	8
81	7
82	6
83	4
84	5
85	4
86	4
87	9