A135981 - cp's OEIS frontend

A135981 Number of distinct prime factors of A135972(n).

n	a(n)
2	0
3	2
4	2
5	3
6	2
7	3
8	2
9	4
10	3
11	3
12	4
13	4
14	5
15	3
16	4
17	2
18	6
19	3
20	3
21	3
22	6
23	3
24	6
25	5
26	4
27	3
28	4
29	8
30	2
31	3
32	4
33	7
34	2
35	6
36	3
37	7
38	6
39	4
40	3
41	9
42	2
43	7
44	5
45	7
46	3
47	6
48	6
49	8
50	4
51	6
52	2
53	11
54	3
55	6
56	7
57	3
58	8
59	2
60	7
61	4
62	9
63	3
64	12
65	3
66	5
67	7
68	7
69	4
70	7
71	3
72	9
73	6
74	5
75	2
76	12
77	3
78	5
79	6
80	10
81	11
82	5
83	9
84	3
85	6
86	5
87	12
88	2
89	5
90	8
91	12

[0, 2, 2, 3, 2, 3, 2, 4, 3, 3, 4, 4, 5, 3, 4, 2, 6, 3, 3, 3, 6, 3, 6, 5, 4, 3, 4, 8, 2, 3, 4, 7, 2, 6, 3, 7, 6, 4, 3, 9, 2, 7, 5, 7, 3, 6, 6, 8, 4, 6, 2, 11, 3, 6, 7, 3, 8, 2, 7, 4, 9, 3, 12, 3, 5, 7, 7, 4, 7, 3, 9, 6, 5, 2, 12, 3, 5, 6, 10, 11, 5, 9, 3, 6, 5, 12, 2, 5, 8, 12]

cp's OEIS Frontend

A135981 Number of distinct prime factors of A135972(n).

Table of values

List of values

n	a(n)
2	0
3	2
4	2
5	3
6	2
7	3
8	2
9	4
10	3
11	3
12	4
13	4
14	5
15	3
16	4
17	2
18	6
19	3
20	3
21	3
22	6
23	3
24	6
25	5
26	4
27	3
28	4
29	8
30	2
31	3
32	4
33	7
34	2
35	6
36	3
37	7
38	6
39	4
40	3
41	9
42	2
43	7
44	5
45	7
46	3
47	6
48	6
49	8
50	4
51	6
52	2
53	11
54	3
55	6
56	7
57	3
58	8
59	2
60	7
61	4
62	9
63	3
64	12
65	3
66	5
67	7
68	7
69	4
70	7
71	3
72	9
73	6
74	5
75	2
76	12
77	3
78	5
79	6
80	10
81	11
82	5
83	9
84	3
85	6
86	5
87	12
88	2
89	5
90	8
91	12

n	a(n)
2	0
3	2
4	2
5	3
6	2
7	3
8	2
9	4
10	3
11	3
12	4
13	4
14	5
15	3
16	4
17	2
18	6
19	3
20	3
21	3
22	6
23	3
24	6
25	5
26	4
27	3
28	4
29	8
30	2
31	3
32	4
33	7
34	2
35	6
36	3
37	7
38	6
39	4
40	3
41	9
42	2
43	7
44	5
45	7
46	3
47	6
48	6
49	8
50	4
51	6
52	2
53	11
54	3
55	6
56	7
57	3
58	8
59	2
60	7
61	4
62	9
63	3
64	12
65	3
66	5
67	7
68	7
69	4
70	7
71	3
72	9
73	6
74	5
75	2
76	12
77	3
78	5
79	6
80	10
81	11
82	5
83	9
84	3
85	6
86	5
87	12
88	2
89	5
90	8
91	12

n	a(n)
2	0
3	2
4	2
5	3
6	2
7	3
8	2
9	4
10	3
11	3
12	4
13	4
14	5
15	3
16	4
17	2
18	6
19	3
20	3
21	3
22	6
23	3
24	6
25	5
26	4
27	3
28	4
29	8
30	2
31	3
32	4
33	7
34	2
35	6
36	3
37	7
38	6
39	4
40	3
41	9
42	2
43	7
44	5
45	7
46	3
47	6
48	6
49	8
50	4
51	6
52	2
53	11
54	3
55	6
56	7
57	3
58	8
59	2
60	7
61	4
62	9
63	3
64	12
65	3
66	5
67	7
68	7
69	4
70	7
71	3
72	9
73	6
74	5
75	2
76	12
77	3
78	5
79	6
80	10
81	11
82	5
83	9
84	3
85	6
86	5
87	12
88	2
89	5
90	8
91	12