A201134 - cp's OEIS frontend

A201134 Least k such that (5^n + k)*5^n - 1 is a prime number.

n	a(n)
1	1
2	17
3	1
4	1
5	5
6	5
7	55
8	25
9	37
10	1
11	53
12	5
13	53
14	35
15	47
16	31
17	127
18	11
19	1
20	17
21	11
22	59
23	71
24	5
25	155
26	23
27	11
28	1
29	13
30	47
31	43
32	71
33	17
34	77
35	53
36	41
37	13
38	277
39	47
40	5
41	143
42	185
43	157
44	371
45	43
46	127
47	119
48	61
49	221
50	79
51	131
52	19
53	49
54	241
55	7
56	121
57	11
58	551
59	157
60	335
61	13
62	17
63	13

[1, 17, 1, 1, 5, 5, 55, 25, 37, 1, 53, 5, 53, 35, 47, 31, 127, 11, 1, 17, 11, 59, 71, 5, 155, 23, 11, 1, 13, 47, 43, 71, 17, 77, 53, 41, 13, 277, 47, 5, 143, 185, 157, 371, 43, 127, 119, 61, 221, 79, 131, 19, 49, 241, 7, 121, 11, 551, 157, 335, 13, 17, 13]

cp's OEIS Frontend

A201134 Least k such that (5^n + k)*5^n - 1 is a prime number.

Table of values

List of values

n	a(n)
1	1
2	17
3	1
4	1
5	5
6	5
7	55
8	25
9	37
10	1
11	53
12	5
13	53
14	35
15	47
16	31
17	127
18	11
19	1
20	17
21	11
22	59
23	71
24	5
25	155
26	23
27	11
28	1
29	13
30	47
31	43
32	71
33	17
34	77
35	53
36	41
37	13
38	277
39	47
40	5
41	143
42	185
43	157
44	371
45	43
46	127
47	119
48	61
49	221
50	79
51	131
52	19
53	49
54	241
55	7
56	121
57	11
58	551
59	157
60	335
61	13
62	17
63	13

n	a(n)
1	1
2	17
3	1
4	1
5	5
6	5
7	55
8	25
9	37
10	1
11	53
12	5
13	53
14	35
15	47
16	31
17	127
18	11
19	1
20	17
21	11
22	59
23	71
24	5
25	155
26	23
27	11
28	1
29	13
30	47
31	43
32	71
33	17
34	77
35	53
36	41
37	13
38	277
39	47
40	5
41	143
42	185
43	157
44	371
45	43
46	127
47	119
48	61
49	221
50	79
51	131
52	19
53	49
54	241
55	7
56	121
57	11
58	551
59	157
60	335
61	13
62	17
63	13

n	a(n)
1	1
2	17
3	1
4	1
5	5
6	5
7	55
8	25
9	37
10	1
11	53
12	5
13	53
14	35
15	47
16	31
17	127
18	11
19	1
20	17
21	11
22	59
23	71
24	5
25	155
26	23
27	11
28	1
29	13
30	47
31	43
32	71
33	17
34	77
35	53
36	41
37	13
38	277
39	47
40	5
41	143
42	185
43	157
44	371
45	43
46	127
47	119
48	61
49	221
50	79
51	131
52	19
53	49
54	241
55	7
56	121
57	11
58	551
59	157
60	335
61	13
62	17
63	13