A105972 - cp's OEIS frontend

A105972 Number of distinct prime divisors of 88...881 (with n 8's).

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

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

cp's OEIS Frontend

A105972 Number of distinct prime divisors of 88...881 (with n 8's).

Table of values

List of values

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

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

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