A103795 - cp's OEIS frontend

A103795 Minimal base b such that (b^prime(n)+1)/(b+1) is prime.

n	a(n)
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	7
11	2
12	16
13	61
14	2
15	6
16	10
17	6
18	2
19	5
20	46
21	18
22	2
23	49
24	16
25	70
26	2
27	5
28	6
29	12
30	92
31	2
32	48
33	89
34	30
35	16
36	147
37	19
38	19
39	2
40	16
41	11
42	289
43	2
44	12
45	52
46	2
47	66
48	9
49	22
50	5
51	489
52	69
53	137
54	16
55	36
56	96
57	76
58	117
59	26
60	3
61	159
62	10
63	16
64	209
65	2
66	16
67	23
68	273
69	2
70	460
71	22
72	3
73	36
74	28
75	329
76	43
77	69
78	86

[2, 2, 2, 2, 2, 2, 2, 2, 7, 2, 16, 61, 2, 6, 10, 6, 2, 5, 46, 18, 2, 49, 16, 70, 2, 5, 6, 12, 92, 2, 48, 89, 30, 16, 147, 19, 19, 2, 16, 11, 289, 2, 12, 52, 2, 66, 9, 22, 5, 489, 69, 137, 16, 36, 96, 76, 117, 26, 3, 159, 10, 16, 209, 2, 16, 23, 273, 2, 460, 22, 3, 36, 28, 329, 43, 69, 86]

cp's OEIS Frontend

A103795 Minimal base b such that (b^prime(n)+1)/(b+1) is prime.

Table of values

List of values

n	a(n)
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	7
11	2
12	16
13	61
14	2
15	6
16	10
17	6
18	2
19	5
20	46
21	18
22	2
23	49
24	16
25	70
26	2
27	5
28	6
29	12
30	92
31	2
32	48
33	89
34	30
35	16
36	147
37	19
38	19
39	2
40	16
41	11
42	289
43	2
44	12
45	52
46	2
47	66
48	9
49	22
50	5
51	489
52	69
53	137
54	16
55	36
56	96
57	76
58	117
59	26
60	3
61	159
62	10
63	16
64	209
65	2
66	16
67	23
68	273
69	2
70	460
71	22
72	3
73	36
74	28
75	329
76	43
77	69
78	86

n	a(n)
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	7
11	2
12	16
13	61
14	2
15	6
16	10
17	6
18	2
19	5
20	46
21	18
22	2
23	49
24	16
25	70
26	2
27	5
28	6
29	12
30	92
31	2
32	48
33	89
34	30
35	16
36	147
37	19
38	19
39	2
40	16
41	11
42	289
43	2
44	12
45	52
46	2
47	66
48	9
49	22
50	5
51	489
52	69
53	137
54	16
55	36
56	96
57	76
58	117
59	26
60	3
61	159
62	10
63	16
64	209
65	2
66	16
67	23
68	273
69	2
70	460
71	22
72	3
73	36
74	28
75	329
76	43
77	69
78	86

n	a(n)
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	7
11	2
12	16
13	61
14	2
15	6
16	10
17	6
18	2
19	5
20	46
21	18
22	2
23	49
24	16
25	70
26	2
27	5
28	6
29	12
30	92
31	2
32	48
33	89
34	30
35	16
36	147
37	19
38	19
39	2
40	16
41	11
42	289
43	2
44	12
45	52
46	2
47	66
48	9
49	22
50	5
51	489
52	69
53	137
54	16
55	36
56	96
57	76
58	117
59	26
60	3
61	159
62	10
63	16
64	209
65	2
66	16
67	23
68	273
69	2
70	460
71	22
72	3
73	36
74	28
75	329
76	43
77	69
78	86