A023270 - cp's OEIS frontend

A023270 Primes that remain prime through 2 iterations of function f(x) = 10x + 9.

n	a(n)
1	5
2	13
3	19
4	23
5	47
6	61
7	103
8	127
9	139
10	233
11	257
12	293
13	331
14	433
15	463
16	491
17	499
18	547
19	593
20	701
21	859
22	967
23	1009
24	1013
25	1049
26	1223
27	1321
28	1399
29	1493
30	1567
31	1723
32	1811
33	1867
34	1889
35	1997
36	2039
37	2063
38	2087
39	2137
40	2203
41	2267
42	2273
43	2309
44	2423
45	2437
46	2441
47	2609
48	2633

[5, 13, 19, 23, 47, 61, 103, 127, 139, 233, 257, 293, 331, 433, 463, 491, 499, 547, 593, 701, 859, 967, 1009, 1013, 1049, 1223, 1321, 1399, 1493, 1567, 1723, 1811, 1867, 1889, 1997, 2039, 2063, 2087, 2137, 2203, 2267, 2273, 2309, 2423, 2437, 2441, 2609, 2633]

cp's OEIS Frontend

A023270 Primes that remain prime through 2 iterations of function f(x) = 10x + 9.

Table of values

List of values