A105068 - cp's OEIS frontend

A105068 Number of distinct prime divisors of 10^n - 3.

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

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

cp's OEIS Frontend

A105068 Number of distinct prime divisors of 10^n - 3.

Table of values

List of values

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

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

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