A023251 - cp's OEIS frontend

A023251 Primes that remain prime through 2 iterations of function f(x) = 4x + 9.

n	a(n)
1	7
2	41
3	43
4	47
5	67
6	71
7	97
8	103
9	137
10	263
11	293
12	307
13	397
14	421
15	467
16	491
17	571
18	587
19	593
20	683
21	727
22	757
23	883
24	907
25	1021
26	1061
27	1063
28	1097
29	1153
30	1373
31	1427
32	1433
33	1453
34	1523
35	1567
36	1657
37	1747
38	1811
39	1867
40	2141
41	2251
42	2281
43	2287
44	2647
45	2693
46	2791
47	2797
48	2857
49	2927

[7, 41, 43, 47, 67, 71, 97, 103, 137, 263, 293, 307, 397, 421, 467, 491, 571, 587, 593, 683, 727, 757, 883, 907, 1021, 1061, 1063, 1097, 1153, 1373, 1427, 1433, 1453, 1523, 1567, 1657, 1747, 1811, 1867, 2141, 2251, 2281, 2287, 2647, 2693, 2791, 2797, 2857, 2927]

cp's OEIS Frontend

A023251 Primes that remain prime through 2 iterations of function f(x) = 4x + 9.

Table of values

List of values