A123627 - cp's OEIS frontend

A123627 Smallest prime q such that (q^p+1)/(q+1) is prime, where p = prime(n); or 0 if no such prime q exists.

n	a(n)
1	0
2	2
3	2
4	2
5	2
6	2
7	2
8	2
9	2
10	7
11	2
12	19
13	61
14	2
15	7
16	839
17	89
18	2
19	5
20	409
21	571
22	2
23	809
24	227
25	317
26	2
27	5
28	79
29	23
30	4073
31	2
32	281
33	89
34	739
35	1427
36	727
37	19
38	19
39	2
40	281
41	11
42	2143
43	2
44	1013
45	4259
46	2
47	661
48	1879
49	401
50	5
51	4099
52	1579
53	137
54	43
55	487
56	307
57	547
58	1709
59	43
60	3
61	463
62	2161
63	353
64	443
65	2

[0, 2, 2, 2, 2, 2, 2, 2, 2, 7, 2, 19, 61, 2, 7, 839, 89, 2, 5, 409, 571, 2, 809, 227, 317, 2, 5, 79, 23, 4073, 2, 281, 89, 739, 1427, 727, 19, 19, 2, 281, 11, 2143, 2, 1013, 4259, 2, 661, 1879, 401, 5, 4099, 1579, 137, 43, 487, 307, 547, 1709, 43, 3, 463, 2161, 353, 443, 2]

cp's OEIS Frontend

A123627 Smallest prime q such that (q^p+1)/(q+1) is prime, where p = prime(n); or 0 if no such prime q exists.

Table of values

List of values