A049493 - cp's OEIS frontend

A049493 Numbers n such that n and n+4^k are all primes for k=1,2,3.

n	a(n)
1	3
2	7
3	37
4	43
5	67
6	163
7	757
8	823
9	967
10	1087
11	1213
12	1303
13	1423
14	2293
15	2377
16	3187
17	3343
18	3847
19	5653
20	5923
21	8677
22	8803
23	9157
24	9277
25	9787
26	11257
27	11617
28	11923
29	12097
30	13693
31	14653
32	14767
33	14827
34	15667
35	15733
36	16417
37	18127
38	18397
39	20113
40	20743
41	26293

[3, 7, 37, 43, 67, 163, 757, 823, 967, 1087, 1213, 1303, 1423, 2293, 2377, 3187, 3343, 3847, 5653, 5923, 8677, 8803, 9157, 9277, 9787, 11257, 11617, 11923, 12097, 13693, 14653, 14767, 14827, 15667, 15733, 16417, 18127, 18397, 20113, 20743, 26293]

cp's OEIS Frontend

A049493 Numbers n such that n and n+4^k are all primes for k=1,2,3.

Table of values

List of values