A161863 - cp's OEIS frontend

A161863 Numbers k such that k^2+k+3 and k^2+k-3 are both prime.

n	a(n)
1	4
2	7
3	10
4	22
5	25
6	34
7	70
8	79
9	112
10	130
11	139
12	172
13	187
14	217
15	229
16	262
17	274
18	295
19	304
20	322
21	337
22	364
23	397
24	400
25	472
26	499
27	574
28	580
29	592
30	622
31	634
32	655
33	664
34	697
35	829
36	844
37	925
38	1057
39	1144
40	1165
41	1255
42	1300
43	1309
44	1357
45	1414
46	1420
47	1489
48	1537
49	1642
50	1669
51	1744

[4, 7, 10, 22, 25, 34, 70, 79, 112, 130, 139, 172, 187, 217, 229, 262, 274, 295, 304, 322, 337, 364, 397, 400, 472, 499, 574, 580, 592, 622, 634, 655, 664, 697, 829, 844, 925, 1057, 1144, 1165, 1255, 1300, 1309, 1357, 1414, 1420, 1489, 1537, 1642, 1669, 1744]

cp's OEIS Frontend

A161863 Numbers k such that k^2+k+3 and k^2+k-3 are both prime.

Table of values

List of values