A307233 - cp's OEIS frontend

A307233 a(n) = Product_{k=1..n} (k^2 + k + 1) mod n.

n	a(n)
1	0
2	1
3	0
4	1
5	3
6	3
7	0
8	1
9	0
10	9
11	3
12	9
13	0
14	7
15	12
16	1
17	3
18	9
19	0
20	1
21	0
22	9
23	3
24	9
25	18
26	13
27	0
28	21
29	3
30	9
31	0
32	1
33	27
34	9
35	7
36	9
37	0
38	19
39	0
40	1
41	3
42	21
43	0
44	37
45	18
46	9
47	3
48	33
49	0
50	49
51	27
52	13
53	3
54	27
55	12
56	49
57	0
58	9
59	3
60	21
61	0
62	31
63	0
64	1
65	13
66	3
67	0
68	13
69	27
70	49
71	3
72	9
73	0
74	37
75	57
76	57
77	42

[0, 1, 0, 1, 3, 3, 0, 1, 0, 9, 3, 9, 0, 7, 12, 1, 3, 9, 0, 1, 0, 9, 3, 9, 18, 13, 0, 21, 3, 9, 0, 1, 27, 9, 7, 9, 0, 19, 0, 1, 3, 21, 0, 37, 18, 9, 3, 33, 0, 49, 27, 13, 3, 27, 12, 49, 0, 9, 3, 21, 0, 31, 0, 1, 13, 3, 0, 13, 27, 49, 3, 9, 0, 37, 57, 57, 42]

cp's OEIS Frontend

A307233 a(n) = Product_{k=1..n} (k^2 + k + 1) mod n.

Table of values

List of values

n	a(n)
1	0
2	1
3	0
4	1
5	3
6	3
7	0
8	1
9	0
10	9
11	3
12	9
13	0
14	7
15	12
16	1
17	3
18	9
19	0
20	1
21	0
22	9
23	3
24	9
25	18
26	13
27	0
28	21
29	3
30	9
31	0
32	1
33	27
34	9
35	7
36	9
37	0
38	19
39	0
40	1
41	3
42	21
43	0
44	37
45	18
46	9
47	3
48	33
49	0
50	49
51	27
52	13
53	3
54	27
55	12
56	49
57	0
58	9
59	3
60	21
61	0
62	31
63	0
64	1
65	13
66	3
67	0
68	13
69	27
70	49
71	3
72	9
73	0
74	37
75	57
76	57
77	42

n	a(n)
1	0
2	1
3	0
4	1
5	3
6	3
7	0
8	1
9	0
10	9
11	3
12	9
13	0
14	7
15	12
16	1
17	3
18	9
19	0
20	1
21	0
22	9
23	3
24	9
25	18
26	13
27	0
28	21
29	3
30	9
31	0
32	1
33	27
34	9
35	7
36	9
37	0
38	19
39	0
40	1
41	3
42	21
43	0
44	37
45	18
46	9
47	3
48	33
49	0
50	49
51	27
52	13
53	3
54	27
55	12
56	49
57	0
58	9
59	3
60	21
61	0
62	31
63	0
64	1
65	13
66	3
67	0
68	13
69	27
70	49
71	3
72	9
73	0
74	37
75	57
76	57
77	42

n	a(n)
1	0
2	1
3	0
4	1
5	3
6	3
7	0
8	1
9	0
10	9
11	3
12	9
13	0
14	7
15	12
16	1
17	3
18	9
19	0
20	1
21	0
22	9
23	3
24	9
25	18
26	13
27	0
28	21
29	3
30	9
31	0
32	1
33	27
34	9
35	7
36	9
37	0
38	19
39	0
40	1
41	3
42	21
43	0
44	37
45	18
46	9
47	3
48	33
49	0
50	49
51	27
52	13
53	3
54	27
55	12
56	49
57	0
58	9
59	3
60	21
61	0
62	31
63	0
64	1
65	13
66	3
67	0
68	13
69	27
70	49
71	3
72	9
73	0
74	37
75	57
76	57
77	42