A023243 - cp's OEIS frontend

A023243 Primes that remain prime through 2 iterations of the function f(x) = 2x + 5.

n	a(n)
1	7
2	13
3	31
4	37
5	67
6	73
7	79
8	139
9	151
10	181
11	367
12	541
13	613
14	661
15	709
16	739
17	787
18	811
19	829
20	997
21	1087
22	1117
23	1123
24	1249
25	1327
26	1669
27	1753
28	1801
29	1861
30	1999
31	2011
32	2113
33	2179
34	2239
35	2293
36	2473
37	2557
38	2659
39	2713
40	2719
41	3037
42	3181
43	3187
44	3271
45	3301
46	3517
47	3727
48	3793

[7, 13, 31, 37, 67, 73, 79, 139, 151, 181, 367, 541, 613, 661, 709, 739, 787, 811, 829, 997, 1087, 1117, 1123, 1249, 1327, 1669, 1753, 1801, 1861, 1999, 2011, 2113, 2179, 2239, 2293, 2473, 2557, 2659, 2713, 2719, 3037, 3181, 3187, 3271, 3301, 3517, 3727, 3793]

cp's OEIS Frontend

A023243 Primes that remain prime through 2 iterations of the function f(x) = 2x + 5.

Table of values

List of values