A216537 - cp's OEIS frontend

A216537 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 7*b^2.

n	a(n)
1	0
2	4
3	5
4	7
5	16
6	17
7	19
8	37
9	53
10	71
11	113
12	353
13	503
14	613
15	1361
16	4787
17	8467
18	10691
19	14449
20	19649
21	51169
22	56003
23	81671
24	94823
25	159521
26	183089
27	193201
28	344293
29	532277
30	616787
31	637751
32	692147

[0, 4, 5, 7, 16, 17, 19, 37, 53, 71, 113, 353, 503, 613, 1361, 4787, 8467, 10691, 14449, 19649, 51169, 56003, 81671, 94823, 159521, 183089, 193201, 344293, 532277, 616787, 637751, 692147]

cp's OEIS Frontend

A216537 Numbers n such that the n-th Lucas number is prime and can be written in the form a^2 + 7*b^2.

Table of values

List of values