A068956 - cp's OEIS frontend

A068956 Number of distinct prime factors of n^n - (n-1)^(n-1).

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

[1, 1, 1, 2, 2, 1, 3, 6, 3, 1, 3, 2, 3, 3, 2, 1, 2, 3, 3, 2, 2, 3, 3, 4, 7, 4, 2, 2, 5, 4, 5, 3, 6, 4, 4, 2, 4, 7, 6, 4, 3, 4, 7, 6, 2, 7, 4, 7, 10, 6, 4, 5, 5, 7, 7, 5, 5, 6, 2, 5, 8, 4, 6, 5, 5, 3, 5, 4, 4, 2, 3, 4, 8, 4, 6, 4, 5, 7, 5, 13, 8, 4, 2, 5, 6]

cp's OEIS Frontend

A068956 Number of distinct prime factors of n^n - (n-1)^(n-1).

Table of values

List of values

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

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

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