A237438 - cp's OEIS frontend

A237438 Double Hex-primes: let f(n) = A102489(n); then sequence lists primes p such that f(p) and f(f(p)) are also primes.

n	a(n)
1	2
2	3
3	5
4	7
5	11
6	43
7	47
8	53
9	59
10	61
11	89
12	97
13	101
14	139
15	151
16	167
17	199
18	241
19	251
20	257
21	269
22	281
23	337
24	373
25	443
26	557
27	599
28	607
29	647
30	653
31	829
32	971
33	1051
34	1093
35	1163
36	1223
37	1279
38	1327
39	1433
40	1459
41	1499
42	1549
43	1583
44	1597
45	1607

[2, 3, 5, 7, 11, 43, 47, 53, 59, 61, 89, 97, 101, 139, 151, 167, 199, 241, 251, 257, 269, 281, 337, 373, 443, 557, 599, 607, 647, 653, 829, 971, 1051, 1093, 1163, 1223, 1279, 1327, 1433, 1459, 1499, 1549, 1583, 1597, 1607]

cp's OEIS Frontend

A237438 Double Hex-primes: let f(n) = A102489(n); then sequence lists primes p such that f(p) and f(f(p)) are also primes.

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List of values