A216575 - cp's OEIS frontend

A216575 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 10*b^2.

n	a(n)
1	5
2	13
3	17
4	37
5	41
6	53
7	61
8	113
9	313
10	353
11	613
12	617
13	1097
14	1361
15	4793
16	7741
17	14449
18	19469
19	35449
20	51169
21	89849
22	140057
23	159521
24	183089
25	193201
26	344293
27	387433
28	443609
29	532277
30	631181
31	651821

[5, 13, 17, 37, 41, 53, 61, 113, 313, 353, 613, 617, 1097, 1361, 4793, 7741, 14449, 19469, 35449, 51169, 89849, 140057, 159521, 183089, 193201, 344293, 387433, 443609, 532277, 631181, 651821]

cp's OEIS Frontend

A216575 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 10*b^2.

Table of values

List of values