A000086 - cp's OEIS frontend

A000086 Number of solutions to x^2 - x + 1 == 0 (mod n).

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	2
8	0
9	0
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	0
19	2
20	0
21	2
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	2
32	0
33	0
34	0
35	0
36	0
37	2
38	0
39	2
40	0
41	0
42	0
43	2
44	0
45	0
46	0
47	0
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	2
58	0
59	0
60	0
61	2
62	0
63	0
64	0
65	0
66	0
67	2
68	0
69	0
70	0
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	4
92	0
93	2
94	0
95	0
96	0
97	2
98	0
99	0
100	0
101	0
102	0
103	2
104	0
105	0

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

cp's OEIS Frontend

A000086 Number of solutions to x^2 - x + 1 == 0 (mod n).

Table of values

List of values

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	2
8	0
9	0
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	0
19	2
20	0
21	2
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	2
32	0
33	0
34	0
35	0
36	0
37	2
38	0
39	2
40	0
41	0
42	0
43	2
44	0
45	0
46	0
47	0
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	2
58	0
59	0
60	0
61	2
62	0
63	0
64	0
65	0
66	0
67	2
68	0
69	0
70	0
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	4
92	0
93	2
94	0
95	0
96	0
97	2
98	0
99	0
100	0
101	0
102	0
103	2
104	0
105	0

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	2
8	0
9	0
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	0
19	2
20	0
21	2
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	2
32	0
33	0
34	0
35	0
36	0
37	2
38	0
39	2
40	0
41	0
42	0
43	2
44	0
45	0
46	0
47	0
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	2
58	0
59	0
60	0
61	2
62	0
63	0
64	0
65	0
66	0
67	2
68	0
69	0
70	0
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	4
92	0
93	2
94	0
95	0
96	0
97	2
98	0
99	0
100	0
101	0
102	0
103	2
104	0
105	0

n	a(n)
1	1
2	0
3	1
4	0
5	0
6	0
7	2
8	0
9	0
10	0
11	0
12	0
13	2
14	0
15	0
16	0
17	0
18	0
19	2
20	0
21	2
22	0
23	0
24	0
25	0
26	0
27	0
28	0
29	0
30	0
31	2
32	0
33	0
34	0
35	0
36	0
37	2
38	0
39	2
40	0
41	0
42	0
43	2
44	0
45	0
46	0
47	0
48	0
49	2
50	0
51	0
52	0
53	0
54	0
55	0
56	0
57	2
58	0
59	0
60	0
61	2
62	0
63	0
64	0
65	0
66	0
67	2
68	0
69	0
70	0
71	0
72	0
73	2
74	0
75	0
76	0
77	0
78	0
79	2
80	0
81	0
82	0
83	0
84	0
85	0
86	0
87	0
88	0
89	0
90	0
91	4
92	0
93	2
94	0
95	0
96	0
97	2
98	0
99	0
100	0
101	0
102	0
103	2
104	0
105	0