A339943 - cp's OEIS frontend

A339943 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,3) - p = 2*n, or -1 if no such prime exists.

n	a(n)
1	-1
2	-1
3	-1
4	3
5	7
6	17
7	23
8	43
9	79
10	107
11	109
12	113
13	197
14	199
15	317
16	509
17	523
18	773
19	1823
20	1237
21	1319
22	3119
23	1321
24	2473
25	2153
26	4159
27	2477
28	6491
29	5581
30	7351
31	9551
32	9973
33	18803
34	18593
35	24247
36	30559
37	31883
38	33211
39	19603
40	66191
41	37699
42	31393
43	83117
44	43801
45	107351
46	107357
47	69499
48	38461
49	130859

[-1, -1, -1, 3, 7, 17, 23, 43, 79, 107, 109, 113, 197, 199, 317, 509, 523, 773, 1823, 1237, 1319, 3119, 1321, 2473, 2153, 4159, 2477, 6491, 5581, 7351, 9551, 9973, 18803, 18593, 24247, 30559, 31883, 33211, 19603, 66191, 37699, 31393, 83117, 43801, 107351, 107357, 69499, 38461, 130859]

cp's OEIS Frontend

A339943 Let N(p,i) denote the result of applying "nextprime" i times to p; a(n) = smallest prime p such that N(p,3) - p = 2*n, or -1 if no such prime exists.

Table of values

List of values