A380833 - cp's OEIS frontend

A380833 a(n) is the number of divisors d of n satisfying (-d)^n mod n = d.

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	2
7	0
8	1
9	0
10	2
11	0
12	2
13	0
14	2
15	1
16	1
17	0
18	2
19	0
20	2
21	0
22	2
23	0
24	1
25	0
26	2
27	0
28	2
29	0
30	4
31	0
32	1
33	0
34	2
35	1
36	2
37	0
38	2
39	0
40	1
41	0
42	3
43	0
44	1
45	0
46	2
47	0
48	2
49	0
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	2
59	0
60	1
61	0
62	2
63	0
64	1
65	0
66	4
67	0
68	2
69	0
70	2
71	0
72	2
73	0
74	2
75	0
76	1
77	0
78	3
79	0
80	2
81	0
82	2
83	0
84	3
85	0
86	2
87	0
88	1
89	0
90	3
91	1
92	1
93	0
94	2
95	0
96	1
97	0
98	2
99	0
100	2

[0, 1, 0, 1, 0, 2, 0, 1, 0, 2, 0, 2, 0, 2, 1, 1, 0, 2, 0, 2, 0, 2, 0, 1, 0, 2, 0, 2, 0, 4, 0, 1, 0, 2, 1, 2, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 2, 0, 1, 0, 2, 0, 1, 0, 4, 0, 2, 0, 2, 0, 2, 0, 2, 0, 1, 0, 3, 0, 2, 0, 2, 0, 3, 0, 2, 0, 1, 0, 3, 1, 1, 0, 2, 0, 1, 0, 2, 0, 2]

cp's OEIS Frontend

A380833 a(n) is the number of divisors d of n satisfying (-d)^n mod n = d.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	2
7	0
8	1
9	0
10	2
11	0
12	2
13	0
14	2
15	1
16	1
17	0
18	2
19	0
20	2
21	0
22	2
23	0
24	1
25	0
26	2
27	0
28	2
29	0
30	4
31	0
32	1
33	0
34	2
35	1
36	2
37	0
38	2
39	0
40	1
41	0
42	3
43	0
44	1
45	0
46	2
47	0
48	2
49	0
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	2
59	0
60	1
61	0
62	2
63	0
64	1
65	0
66	4
67	0
68	2
69	0
70	2
71	0
72	2
73	0
74	2
75	0
76	1
77	0
78	3
79	0
80	2
81	0
82	2
83	0
84	3
85	0
86	2
87	0
88	1
89	0
90	3
91	1
92	1
93	0
94	2
95	0
96	1
97	0
98	2
99	0
100	2

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	2
7	0
8	1
9	0
10	2
11	0
12	2
13	0
14	2
15	1
16	1
17	0
18	2
19	0
20	2
21	0
22	2
23	0
24	1
25	0
26	2
27	0
28	2
29	0
30	4
31	0
32	1
33	0
34	2
35	1
36	2
37	0
38	2
39	0
40	1
41	0
42	3
43	0
44	1
45	0
46	2
47	0
48	2
49	0
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	2
59	0
60	1
61	0
62	2
63	0
64	1
65	0
66	4
67	0
68	2
69	0
70	2
71	0
72	2
73	0
74	2
75	0
76	1
77	0
78	3
79	0
80	2
81	0
82	2
83	0
84	3
85	0
86	2
87	0
88	1
89	0
90	3
91	1
92	1
93	0
94	2
95	0
96	1
97	0
98	2
99	0
100	2

n	a(n)
1	0
2	1
3	0
4	1
5	0
6	2
7	0
8	1
9	0
10	2
11	0
12	2
13	0
14	2
15	1
16	1
17	0
18	2
19	0
20	2
21	0
22	2
23	0
24	1
25	0
26	2
27	0
28	2
29	0
30	4
31	0
32	1
33	0
34	2
35	1
36	2
37	0
38	2
39	0
40	1
41	0
42	3
43	0
44	1
45	0
46	2
47	0
48	2
49	0
50	2
51	0
52	2
53	0
54	2
55	0
56	2
57	0
58	2
59	0
60	1
61	0
62	2
63	0
64	1
65	0
66	4
67	0
68	2
69	0
70	2
71	0
72	2
73	0
74	2
75	0
76	1
77	0
78	3
79	0
80	2
81	0
82	2
83	0
84	3
85	0
86	2
87	0
88	1
89	0
90	3
91	1
92	1
93	0
94	2
95	0
96	1
97	0
98	2
99	0
100	2