A295641 - cp's OEIS frontend

A295641 Smallest k not divisible by 7 such that k*7^n + 1 is prime.

n	a(n)
1	4
2	4
3	4
4	6
5	10
6	4
7	4
8	36
9	6
10	4
11	4
12	82
13	36
14	10
15	24
16	90
17	4
18	48
19	12
20	16
21	118
22	10
23	72
24	16
25	94
26	18
27	24
28	150
29	76
30	58
31	34
32	40
33	156
34	34
35	52
36	166
37	16
38	4
39	36
40	90
41	120
42	78
43	34
44	36
45	10
46	244
47	60
48	102
49	18
50	114
51	172
52	48
53	94
54	10
55	66
56	396
57	234
58	240
59	166

[4, 4, 4, 6, 10, 4, 4, 36, 6, 4, 4, 82, 36, 10, 24, 90, 4, 48, 12, 16, 118, 10, 72, 16, 94, 18, 24, 150, 76, 58, 34, 40, 156, 34, 52, 166, 16, 4, 36, 90, 120, 78, 34, 36, 10, 244, 60, 102, 18, 114, 172, 48, 94, 10, 66, 396, 234, 240, 166]

cp's OEIS Frontend

A295641 Smallest k not divisible by 7 such that k*7^n + 1 is prime.

Table of values

List of values

n	a(n)
1	4
2	4
3	4
4	6
5	10
6	4
7	4
8	36
9	6
10	4
11	4
12	82
13	36
14	10
15	24
16	90
17	4
18	48
19	12
20	16
21	118
22	10
23	72
24	16
25	94
26	18
27	24
28	150
29	76
30	58
31	34
32	40
33	156
34	34
35	52
36	166
37	16
38	4
39	36
40	90
41	120
42	78
43	34
44	36
45	10
46	244
47	60
48	102
49	18
50	114
51	172
52	48
53	94
54	10
55	66
56	396
57	234
58	240
59	166

n	a(n)
1	4
2	4
3	4
4	6
5	10
6	4
7	4
8	36
9	6
10	4
11	4
12	82
13	36
14	10
15	24
16	90
17	4
18	48
19	12
20	16
21	118
22	10
23	72
24	16
25	94
26	18
27	24
28	150
29	76
30	58
31	34
32	40
33	156
34	34
35	52
36	166
37	16
38	4
39	36
40	90
41	120
42	78
43	34
44	36
45	10
46	244
47	60
48	102
49	18
50	114
51	172
52	48
53	94
54	10
55	66
56	396
57	234
58	240
59	166

n	a(n)
1	4
2	4
3	4
4	6
5	10
6	4
7	4
8	36
9	6
10	4
11	4
12	82
13	36
14	10
15	24
16	90
17	4
18	48
19	12
20	16
21	118
22	10
23	72
24	16
25	94
26	18
27	24
28	150
29	76
30	58
31	34
32	40
33	156
34	34
35	52
36	166
37	16
38	4
39	36
40	90
41	120
42	78
43	34
44	36
45	10
46	244
47	60
48	102
49	18
50	114
51	172
52	48
53	94
54	10
55	66
56	396
57	234
58	240
59	166