A104564 - cp's OEIS frontend

A104564 Number of distinct prime divisors of 77...771 (with n 7's).

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

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

cp's OEIS Frontend

A104564 Number of distinct prime divisors of 77...771 (with n 7's).

Table of values

List of values

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

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

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