A238445 - cp's OEIS frontend

A238445 Primes p such that f(f(p)) is prime, where f(x) = x^5-x^4-x^3-x^2-x-1.

n	a(n)
1	3
2	13
3	61
4	103
5	193
6	199
7	307
8	431
9	569
10	977
11	1201
12	1451
13	1481
14	1609
15	1669
16	1889
17	2371
18	2381
19	2711
20	2819
21	3083
22	3469
23	4289
24	4337
25	4567
26	5231
27	5501
28	6733
29	7043
30	7253
31	7351
32	7549
33	8707
34	9257
35	9497
36	10039
37	10687
38	11491
39	12227
40	12517
41	12941
42	13397

[3, 13, 61, 103, 193, 199, 307, 431, 569, 977, 1201, 1451, 1481, 1609, 1669, 1889, 2371, 2381, 2711, 2819, 3083, 3469, 4289, 4337, 4567, 5231, 5501, 6733, 7043, 7253, 7351, 7549, 8707, 9257, 9497, 10039, 10687, 11491, 12227, 12517, 12941, 13397]

cp's OEIS Frontend

A238445 Primes p such that f(f(p)) is prime, where f(x) = x^5-x^4-x^3-x^2-x-1.

Table of values

List of values