A200922 - cp's OEIS frontend

A200922 Least k such that (3^n - k)*3^n - 1 is a prime number.

n	a(n)
1	1
2	1
3	1
4	3
5	7
6	1
7	1
8	13
9	17
10	17
11	7
12	43
13	25
14	3
15	41
16	29
17	57
18	11
19	21
20	1
21	25
22	29
23	17
24	27
25	15
26	7
27	11
28	63
29	15
30	237
31	73
32	21
33	43
34	229
35	1
36	1
37	73
38	3
39	253
40	63
41	7
42	179
43	3
44	289
45	97
46	157
47	7
48	59
49	95
50	237
51	33
52	47
53	3
54	31
55	43
56	141
57	157
58	63
59	137
60	101
61	387
62	109
63	157
64	27
65	29
66	37

[1, 1, 1, 3, 7, 1, 1, 13, 17, 17, 7, 43, 25, 3, 41, 29, 57, 11, 21, 1, 25, 29, 17, 27, 15, 7, 11, 63, 15, 237, 73, 21, 43, 229, 1, 1, 73, 3, 253, 63, 7, 179, 3, 289, 97, 157, 7, 59, 95, 237, 33, 47, 3, 31, 43, 141, 157, 63, 137, 101, 387, 109, 157, 27, 29, 37]

cp's OEIS Frontend

A200922 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	1
4	3
5	7
6	1
7	1
8	13
9	17
10	17
11	7
12	43
13	25
14	3
15	41
16	29
17	57
18	11
19	21
20	1
21	25
22	29
23	17
24	27
25	15
26	7
27	11
28	63
29	15
30	237
31	73
32	21
33	43
34	229
35	1
36	1
37	73
38	3
39	253
40	63
41	7
42	179
43	3
44	289
45	97
46	157
47	7
48	59
49	95
50	237
51	33
52	47
53	3
54	31
55	43
56	141
57	157
58	63
59	137
60	101
61	387
62	109
63	157
64	27
65	29
66	37

n	a(n)
1	1
2	1
3	1
4	3
5	7
6	1
7	1
8	13
9	17
10	17
11	7
12	43
13	25
14	3
15	41
16	29
17	57
18	11
19	21
20	1
21	25
22	29
23	17
24	27
25	15
26	7
27	11
28	63
29	15
30	237
31	73
32	21
33	43
34	229
35	1
36	1
37	73
38	3
39	253
40	63
41	7
42	179
43	3
44	289
45	97
46	157
47	7
48	59
49	95
50	237
51	33
52	47
53	3
54	31
55	43
56	141
57	157
58	63
59	137
60	101
61	387
62	109
63	157
64	27
65	29
66	37

n	a(n)
1	1
2	1
3	1
4	3
5	7
6	1
7	1
8	13
9	17
10	17
11	7
12	43
13	25
14	3
15	41
16	29
17	57
18	11
19	21
20	1
21	25
22	29
23	17
24	27
25	15
26	7
27	11
28	63
29	15
30	237
31	73
32	21
33	43
34	229
35	1
36	1
37	73
38	3
39	253
40	63
41	7
42	179
43	3
44	289
45	97
46	157
47	7
48	59
49	95
50	237
51	33
52	47
53	3
54	31
55	43
56	141
57	157
58	63
59	137
60	101
61	387
62	109
63	157
64	27
65	29
66	37