A200923 - cp's OEIS frontend

A200923 Least k such that (3^n - k)*3^n + 1 is a prime number.

n	a(n)
1	1
2	1
3	7
4	1
5	3
6	1
7	7
8	5
9	9
10	29
11	19
12	1
13	7
14	49
15	49
16	9
17	23
18	1
19	3
20	29
21	53
22	39
23	41
24	35
25	7
26	5
27	51
28	33
29	3
30	81
31	83
32	15
33	21
34	31
35	61
36	69
37	67
38	87
39	27
40	5
41	19
42	55
43	153
44	35
45	99
46	31
47	23
48	49
49	47
50	95
51	3
52	115
53	89
54	55
55	23
56	61
57	139
58	49
59	87
60	5
61	153
62	87
63	269
64	113
65	67
66	207
67	41
68	33

[1, 1, 7, 1, 3, 1, 7, 5, 9, 29, 19, 1, 7, 49, 49, 9, 23, 1, 3, 29, 53, 39, 41, 35, 7, 5, 51, 33, 3, 81, 83, 15, 21, 31, 61, 69, 67, 87, 27, 5, 19, 55, 153, 35, 99, 31, 23, 49, 47, 95, 3, 115, 89, 55, 23, 61, 139, 49, 87, 5, 153, 87, 269, 113, 67, 207, 41, 33]

cp's OEIS Frontend

A200923 Least k such that (3^n - k)*3^n + 1 is a prime number.

Table of values

List of values

n	a(n)
1	1
2	1
3	7
4	1
5	3
6	1
7	7
8	5
9	9
10	29
11	19
12	1
13	7
14	49
15	49
16	9
17	23
18	1
19	3
20	29
21	53
22	39
23	41
24	35
25	7
26	5
27	51
28	33
29	3
30	81
31	83
32	15
33	21
34	31
35	61
36	69
37	67
38	87
39	27
40	5
41	19
42	55
43	153
44	35
45	99
46	31
47	23
48	49
49	47
50	95
51	3
52	115
53	89
54	55
55	23
56	61
57	139
58	49
59	87
60	5
61	153
62	87
63	269
64	113
65	67
66	207
67	41
68	33

n	a(n)
1	1
2	1
3	7
4	1
5	3
6	1
7	7
8	5
9	9
10	29
11	19
12	1
13	7
14	49
15	49
16	9
17	23
18	1
19	3
20	29
21	53
22	39
23	41
24	35
25	7
26	5
27	51
28	33
29	3
30	81
31	83
32	15
33	21
34	31
35	61
36	69
37	67
38	87
39	27
40	5
41	19
42	55
43	153
44	35
45	99
46	31
47	23
48	49
49	47
50	95
51	3
52	115
53	89
54	55
55	23
56	61
57	139
58	49
59	87
60	5
61	153
62	87
63	269
64	113
65	67
66	207
67	41
68	33

n	a(n)
1	1
2	1
3	7
4	1
5	3
6	1
7	7
8	5
9	9
10	29
11	19
12	1
13	7
14	49
15	49
16	9
17	23
18	1
19	3
20	29
21	53
22	39
23	41
24	35
25	7
26	5
27	51
28	33
29	3
30	81
31	83
32	15
33	21
34	31
35	61
36	69
37	67
38	87
39	27
40	5
41	19
42	55
43	153
44	35
45	99
46	31
47	23
48	49
49	47
50	95
51	3
52	115
53	89
54	55
55	23
56	61
57	139
58	49
59	87
60	5
61	153
62	87
63	269
64	113
65	67
66	207
67	41
68	33