A331810 - cp's OEIS frontend

A331810 Smallest integer x such that prime(n) divides 1 + x + x^2 + ... + x^(q-1) where q = A023503(n), or 0 if no such x exists.

n	a(n)
2	2
3	4
4	2
5	3
6	3
7	16
8	7
9	2
10	7
11	2
12	10
13	10
14	4
15	2
16	10
17	3
18	9
19	9
20	20
21	8
22	8
23	3
24	2
25	35
26	36
27	8
28	3
29	45
30	16
31	2
32	39
33	16
34	6
35	5
36	8
37	14
38	58
39	2
40	6
41	3
42	42
43	5
44	84
45	36
46	18
47	58
48	2
49	3
50	16
51	2
52	6
53	87
54	20
55	256
56	2
57	5
58	10
59	16
60	59
61	4
62	16
63	9
64	7
65	27
66	10
67	74
68	8
69	3
70	31
71	22
72	2
73	7
74	12
75	86
76	2
77	5

[2, 4, 2, 3, 3, 16, 7, 2, 7, 2, 10, 10, 4, 2, 10, 3, 9, 9, 20, 8, 8, 3, 2, 35, 36, 8, 3, 45, 16, 2, 39, 16, 6, 5, 8, 14, 58, 2, 6, 3, 42, 5, 84, 36, 18, 58, 2, 3, 16, 2, 6, 87, 20, 256, 2, 5, 10, 16, 59, 4, 16, 9, 7, 27, 10, 74, 8, 3, 31, 22, 2, 7, 12, 86, 2, 5]

cp's OEIS Frontend

A331810 Smallest integer x such that prime(n) divides 1 + x + x^2 + ... + x^(q-1) where q = A023503(n), or 0 if no such x exists.

Table of values

List of values

n	a(n)
2	2
3	4
4	2
5	3
6	3
7	16
8	7
9	2
10	7
11	2
12	10
13	10
14	4
15	2
16	10
17	3
18	9
19	9
20	20
21	8
22	8
23	3
24	2
25	35
26	36
27	8
28	3
29	45
30	16
31	2
32	39
33	16
34	6
35	5
36	8
37	14
38	58
39	2
40	6
41	3
42	42
43	5
44	84
45	36
46	18
47	58
48	2
49	3
50	16
51	2
52	6
53	87
54	20
55	256
56	2
57	5
58	10
59	16
60	59
61	4
62	16
63	9
64	7
65	27
66	10
67	74
68	8
69	3
70	31
71	22
72	2
73	7
74	12
75	86
76	2
77	5

n	a(n)
2	2
3	4
4	2
5	3
6	3
7	16
8	7
9	2
10	7
11	2
12	10
13	10
14	4
15	2
16	10
17	3
18	9
19	9
20	20
21	8
22	8
23	3
24	2
25	35
26	36
27	8
28	3
29	45
30	16
31	2
32	39
33	16
34	6
35	5
36	8
37	14
38	58
39	2
40	6
41	3
42	42
43	5
44	84
45	36
46	18
47	58
48	2
49	3
50	16
51	2
52	6
53	87
54	20
55	256
56	2
57	5
58	10
59	16
60	59
61	4
62	16
63	9
64	7
65	27
66	10
67	74
68	8
69	3
70	31
71	22
72	2
73	7
74	12
75	86
76	2
77	5

n	a(n)
2	2
3	4
4	2
5	3
6	3
7	16
8	7
9	2
10	7
11	2
12	10
13	10
14	4
15	2
16	10
17	3
18	9
19	9
20	20
21	8
22	8
23	3
24	2
25	35
26	36
27	8
28	3
29	45
30	16
31	2
32	39
33	16
34	6
35	5
36	8
37	14
38	58
39	2
40	6
41	3
42	42
43	5
44	84
45	36
46	18
47	58
48	2
49	3
50	16
51	2
52	6
53	87
54	20
55	256
56	2
57	5
58	10
59	16
60	59
61	4
62	16
63	9
64	7
65	27
66	10
67	74
68	8
69	3
70	31
71	22
72	2
73	7
74	12
75	86
76	2
77	5