A161864 - cp's OEIS frontend

A161864 Numbers n such that n^2 + n + 5 and n^2 + n - 5 are both prime.

n	a(n)
1	3
2	6
3	11
4	18
5	21
6	23
7	27
8	32
9	42
10	48
11	51
12	83
13	86
14	93
15	116
16	153
17	158
18	182
19	188
20	216
21	282
22	291
23	317
24	333
25	396
26	482
27	681
28	737
29	786
30	798
31	818
32	821
33	872
34	923
35	956
36	966
37	977
38	986
39	1007
40	1026
41	1077
42	1082
43	1106
44	1161
45	1287
46	1292
47	1302
48	1337
49	1341
50	1451
51	1467
52	1563

[3, 6, 11, 18, 21, 23, 27, 32, 42, 48, 51, 83, 86, 93, 116, 153, 158, 182, 188, 216, 282, 291, 317, 333, 396, 482, 681, 737, 786, 798, 818, 821, 872, 923, 956, 966, 977, 986, 1007, 1026, 1077, 1082, 1106, 1161, 1287, 1292, 1302, 1337, 1341, 1451, 1467, 1563]

cp's OEIS Frontend

A161864 Numbers n such that n^2 + n + 5 and n^2 + n - 5 are both prime.

Table of values

List of values