A295639 - cp's OEIS frontend

A295639 Smallest k not divisible by 3 such that k*3^n + 1 is prime.

n	a(n)
1	2
2	2
3	4
4	2
5	2
6	2
7	8
8	8
9	2
10	8
11	28
12	10
13	64
14	4
15	4
16	2
17	2
18	10
19	20
20	26
21	56
22	8
23	104
24	16
25	34
26	14
27	14
28	20
29	26
30	2
31	26
32	26
33	14
34	22
35	26
36	16
37	22
38	50
39	4
40	62
41	64
42	68
43	88
44	70
45	56
46	34
47	146
48	32
49	50
50	20
51	314
52	8
53	40
54	2
55	70
56	22
57	2
58	8
59	40
60	2
61	64
62	14
63	136
64	100
65	2

[2, 2, 4, 2, 2, 2, 8, 8, 2, 8, 28, 10, 64, 4, 4, 2, 2, 10, 20, 26, 56, 8, 104, 16, 34, 14, 14, 20, 26, 2, 26, 26, 14, 22, 26, 16, 22, 50, 4, 62, 64, 68, 88, 70, 56, 34, 146, 32, 50, 20, 314, 8, 40, 2, 70, 22, 2, 8, 40, 2, 64, 14, 136, 100, 2]

cp's OEIS Frontend

A295639 Smallest k not divisible by 3 such that k*3^n + 1 is prime.

Table of values

List of values

n	a(n)
1	2
2	2
3	4
4	2
5	2
6	2
7	8
8	8
9	2
10	8
11	28
12	10
13	64
14	4
15	4
16	2
17	2
18	10
19	20
20	26
21	56
22	8
23	104
24	16
25	34
26	14
27	14
28	20
29	26
30	2
31	26
32	26
33	14
34	22
35	26
36	16
37	22
38	50
39	4
40	62
41	64
42	68
43	88
44	70
45	56
46	34
47	146
48	32
49	50
50	20
51	314
52	8
53	40
54	2
55	70
56	22
57	2
58	8
59	40
60	2
61	64
62	14
63	136
64	100
65	2

n	a(n)
1	2
2	2
3	4
4	2
5	2
6	2
7	8
8	8
9	2
10	8
11	28
12	10
13	64
14	4
15	4
16	2
17	2
18	10
19	20
20	26
21	56
22	8
23	104
24	16
25	34
26	14
27	14
28	20
29	26
30	2
31	26
32	26
33	14
34	22
35	26
36	16
37	22
38	50
39	4
40	62
41	64
42	68
43	88
44	70
45	56
46	34
47	146
48	32
49	50
50	20
51	314
52	8
53	40
54	2
55	70
56	22
57	2
58	8
59	40
60	2
61	64
62	14
63	136
64	100
65	2

n	a(n)
1	2
2	2
3	4
4	2
5	2
6	2
7	8
8	8
9	2
10	8
11	28
12	10
13	64
14	4
15	4
16	2
17	2
18	10
19	20
20	26
21	56
22	8
23	104
24	16
25	34
26	14
27	14
28	20
29	26
30	2
31	26
32	26
33	14
34	22
35	26
36	16
37	22
38	50
39	4
40	62
41	64
42	68
43	88
44	70
45	56
46	34
47	146
48	32
49	50
50	20
51	314
52	8
53	40
54	2
55	70
56	22
57	2
58	8
59	40
60	2
61	64
62	14
63	136
64	100
65	2