A256580 - cp's OEIS frontend

A256580 Number of quadruples (x, x+1, x+2, x+3) with 1 < x < p-3 of consecutive integers whose product is 1 mod p.

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	0
9	3
10	0
11	2
12	0
13	2
14	0
15	2
16	0
17	0
18	0
19	0
20	0
21	2
22	0
23	0
24	2
25	2
26	0
27	2
28	0
29	0
30	0
31	4
32	0
33	4
34	0
35	0
36	4
37	0
38	0
39	2
40	0
41	0
42	0
43	0
44	0
45	0
46	2
47	0
48	2
49	0
50	0
51	4
52	4
53	2
54	0
55	2
56	0
57	0
58	2
59	0
60	4
61	0
62	0
63	0
64	2
65	2
66	0
67	0
68	0
69	0
70	0
71	2
72	4
73	2
74	0
75	0
76	2
77	0
78	0
79	0
80	2
81	0
82	0
83	4
84	2
85	2
86	0
87	4
88	0
89	0
90	0
91	0
92	2
93	4
94	0
95	0
96	2
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	2
107	0
108	2
109	0
110	2
111	2
112	0
113	0
114	0
115	0
116	0
117	0
118	2
119	0
120	0
121	0
122	4
123	0
124	0
125	0
126	0
127	0
128	2
129	2
130	0
131	0
132	4
133	4
134	0
135	2
136	2
137	0
138	0
139	0
140	0
141	0
142	0
143	0
144	0
145	0
146	2
147	0
148	2
149	0
150	0
151	0
152	2
153	0
154	2
155	0
156	4
157	0
158	2
159	2
160	0
161	0
162	4
163	4
164	0
165	4
166	2
167	0
168	0

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

cp's OEIS Frontend

A256580 Number of quadruples (x, x+1, x+2, x+3) with 1 < x < p-3 of consecutive integers whose product is 1 mod p.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	0
9	3
10	0
11	2
12	0
13	2
14	0
15	2
16	0
17	0
18	0
19	0
20	0
21	2
22	0
23	0
24	2
25	2
26	0
27	2
28	0
29	0
30	0
31	4
32	0
33	4
34	0
35	0
36	4
37	0
38	0
39	2
40	0
41	0
42	0
43	0
44	0
45	0
46	2
47	0
48	2
49	0
50	0
51	4
52	4
53	2
54	0
55	2
56	0
57	0
58	2
59	0
60	4
61	0
62	0
63	0
64	2
65	2
66	0
67	0
68	0
69	0
70	0
71	2
72	4
73	2
74	0
75	0
76	2
77	0
78	0
79	0
80	2
81	0
82	0
83	4
84	2
85	2
86	0
87	4
88	0
89	0
90	0
91	0
92	2
93	4
94	0
95	0
96	2
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	2
107	0
108	2
109	0
110	2
111	2
112	0
113	0
114	0
115	0
116	0
117	0
118	2
119	0
120	0
121	0
122	4
123	0
124	0
125	0
126	0
127	0
128	2
129	2
130	0
131	0
132	4
133	4
134	0
135	2
136	2
137	0
138	0
139	0
140	0
141	0
142	0
143	0
144	0
145	0
146	2
147	0
148	2
149	0
150	0
151	0
152	2
153	0
154	2
155	0
156	4
157	0
158	2
159	2
160	0
161	0
162	4
163	4
164	0
165	4
166	2
167	0
168	0

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	0
9	3
10	0
11	2
12	0
13	2
14	0
15	2
16	0
17	0
18	0
19	0
20	0
21	2
22	0
23	0
24	2
25	2
26	0
27	2
28	0
29	0
30	0
31	4
32	0
33	4
34	0
35	0
36	4
37	0
38	0
39	2
40	0
41	0
42	0
43	0
44	0
45	0
46	2
47	0
48	2
49	0
50	0
51	4
52	4
53	2
54	0
55	2
56	0
57	0
58	2
59	0
60	4
61	0
62	0
63	0
64	2
65	2
66	0
67	0
68	0
69	0
70	0
71	2
72	4
73	2
74	0
75	0
76	2
77	0
78	0
79	0
80	2
81	0
82	0
83	4
84	2
85	2
86	0
87	4
88	0
89	0
90	0
91	0
92	2
93	4
94	0
95	0
96	2
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	2
107	0
108	2
109	0
110	2
111	2
112	0
113	0
114	0
115	0
116	0
117	0
118	2
119	0
120	0
121	0
122	4
123	0
124	0
125	0
126	0
127	0
128	2
129	2
130	0
131	0
132	4
133	4
134	0
135	2
136	2
137	0
138	0
139	0
140	0
141	0
142	0
143	0
144	0
145	0
146	2
147	0
148	2
149	0
150	0
151	0
152	2
153	0
154	2
155	0
156	4
157	0
158	2
159	2
160	0
161	0
162	4
163	4
164	0
165	4
166	2
167	0
168	0

n	a(n)
1	0
2	0
3	0
4	1
5	0
6	0
7	2
8	0
9	3
10	0
11	2
12	0
13	2
14	0
15	2
16	0
17	0
18	0
19	0
20	0
21	2
22	0
23	0
24	2
25	2
26	0
27	2
28	0
29	0
30	0
31	4
32	0
33	4
34	0
35	0
36	4
37	0
38	0
39	2
40	0
41	0
42	0
43	0
44	0
45	0
46	2
47	0
48	2
49	0
50	0
51	4
52	4
53	2
54	0
55	2
56	0
57	0
58	2
59	0
60	4
61	0
62	0
63	0
64	2
65	2
66	0
67	0
68	0
69	0
70	0
71	2
72	4
73	2
74	0
75	0
76	2
77	0
78	0
79	0
80	2
81	0
82	0
83	4
84	2
85	2
86	0
87	4
88	0
89	0
90	0
91	0
92	2
93	4
94	0
95	0
96	2
97	0
98	2
99	0
100	0
101	0
102	0
103	0
104	0
105	0
106	2
107	0
108	2
109	0
110	2
111	2
112	0
113	0
114	0
115	0
116	0
117	0
118	2
119	0
120	0
121	0
122	4
123	0
124	0
125	0
126	0
127	0
128	2
129	2
130	0
131	0
132	4
133	4
134	0
135	2
136	2
137	0
138	0
139	0
140	0
141	0
142	0
143	0
144	0
145	0
146	2
147	0
148	2
149	0
150	0
151	0
152	2
153	0
154	2
155	0
156	4
157	0
158	2
159	2
160	0
161	0
162	4
163	4
164	0
165	4
166	2
167	0
168	0