A144103 - cp's OEIS frontend

A144103 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,2) - p = 2*n, or -1 if no such prime exists.

n	a(n)
1	-1
2	3
3	5
4	23
5	19
6	47
7	83
8	211
9	109
10	317
11	619
12	199
13	1373
14	1123
15	1627
16	4751
17	2557
18	3413
19	4289
20	1321
21	2161
22	2477
23	7963
24	5591
25	9551
26	17239
27	15823
28	14087
29	19603
30	34963
31	36389
32	33223
33	24251
34	35603
35	43321
36	19609
37	134507
38	31393
39	136999
40	31397
41	38461
42	107357

[-1, 3, 5, 23, 19, 47, 83, 211, 109, 317, 619, 199, 1373, 1123, 1627, 4751, 2557, 3413, 4289, 1321, 2161, 2477, 7963, 5591, 9551, 17239, 15823, 14087, 19603, 34963, 36389, 33223, 24251, 35603, 43321, 19609, 134507, 31393, 136999, 31397, 38461, 107357]

cp's OEIS Frontend

A144103 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,2) - p = 2*n, or -1 if no such prime exists.

Table of values

List of values