A295640 - cp's OEIS frontend

A295640 Smallest k not divisible by 5 such that k*5^n + 1 is prime.

n	a(n)
1	2
2	4
3	2
4	18
5	12
6	4
7	12
8	24
9	26
10	18
11	42
12	28
13	2
14	16
15	18
16	34
17	92
18	4
19	12
20	46
21	26
22	16
23	6
24	36
25	26
26	16
27	6
28	16
29	152
30	18
31	42
32	136
33	6
34	162
35	132
36	58
37	24
38	142
39	48
40	22
41	56
42	16
43	36
44	84
45	2
46	12
47	24
48	108
49	168
50	4
51	12
52	214
53	36
54	114
55	12
56	444
57	26
58	54
59	416
60	42

[2, 4, 2, 18, 12, 4, 12, 24, 26, 18, 42, 28, 2, 16, 18, 34, 92, 4, 12, 46, 26, 16, 6, 36, 26, 16, 6, 16, 152, 18, 42, 136, 6, 162, 132, 58, 24, 142, 48, 22, 56, 16, 36, 84, 2, 12, 24, 108, 168, 4, 12, 214, 36, 114, 12, 444, 26, 54, 416, 42]

cp's OEIS Frontend

A295640 Smallest k not divisible by 5 such that k*5^n + 1 is prime.

Table of values

List of values

n	a(n)
1	2
2	4
3	2
4	18
5	12
6	4
7	12
8	24
9	26
10	18
11	42
12	28
13	2
14	16
15	18
16	34
17	92
18	4
19	12
20	46
21	26
22	16
23	6
24	36
25	26
26	16
27	6
28	16
29	152
30	18
31	42
32	136
33	6
34	162
35	132
36	58
37	24
38	142
39	48
40	22
41	56
42	16
43	36
44	84
45	2
46	12
47	24
48	108
49	168
50	4
51	12
52	214
53	36
54	114
55	12
56	444
57	26
58	54
59	416
60	42

n	a(n)
1	2
2	4
3	2
4	18
5	12
6	4
7	12
8	24
9	26
10	18
11	42
12	28
13	2
14	16
15	18
16	34
17	92
18	4
19	12
20	46
21	26
22	16
23	6
24	36
25	26
26	16
27	6
28	16
29	152
30	18
31	42
32	136
33	6
34	162
35	132
36	58
37	24
38	142
39	48
40	22
41	56
42	16
43	36
44	84
45	2
46	12
47	24
48	108
49	168
50	4
51	12
52	214
53	36
54	114
55	12
56	444
57	26
58	54
59	416
60	42

n	a(n)
1	2
2	4
3	2
4	18
5	12
6	4
7	12
8	24
9	26
10	18
11	42
12	28
13	2
14	16
15	18
16	34
17	92
18	4
19	12
20	46
21	26
22	16
23	6
24	36
25	26
26	16
27	6
28	16
29	152
30	18
31	42
32	136
33	6
34	162
35	132
36	58
37	24
38	142
39	48
40	22
41	56
42	16
43	36
44	84
45	2
46	12
47	24
48	108
49	168
50	4
51	12
52	214
53	36
54	114
55	12
56	444
57	26
58	54
59	416
60	42