A181572 - cp's OEIS frontend

A181572 Number of distinct prime divisors of 5^n + n.

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

[2, 1, 1, 2, 3, 3, 4, 2, 3, 4, 3, 3, 3, 5, 5, 3, 2, 5, 4, 4, 4, 3, 2, 3, 5, 3, 4, 4, 5, 5, 4, 3, 3, 4, 4, 3, 5, 5, 4, 9, 3, 6, 6, 5, 4, 6, 3, 4, 5, 4, 3, 5, 5, 4, 9, 2, 5, 4, 4, 6, 7, 4, 3, 6, 7, 4, 7, 4, 6, 5, 4, 4, 7, 7, 4, 4, 5, 6, 8, 6, 3, 3, 6, 3, 9, 5, 4]

cp's OEIS Frontend

A181572 Number of distinct prime divisors of 5^n + n.

Table of values

List of values

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

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

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