A387049 - cp's OEIS frontend

A387049 Numbers k such that both k + sopfr(k) and k^2 + sopfr(k)^2 are prime, where sopfr = A001414.

n	a(n)
1	6
2	10
3	12
4	14
5	21
6	44
7	46
8	51
9	57
10	65
11	74
12	86
13	90
14	111
15	141
16	155
17	161
18	166
19	210
20	212
21	221
22	252
23	254
24	295
25	297
26	300
27	306
28	365
29	371
30	404
31	415
32	447
33	466
34	485
35	504
36	513
37	514
38	524
39	545
40	629
41	634
42	640
43	674
44	685
45	720
46	767
47	866
48	910
49	914
50	930
51	985
52	1020
53	1035
54	1062
55	1124
56	1135
57	1157
58	1189
59	1197
60	1214

[6, 10, 12, 14, 21, 44, 46, 51, 57, 65, 74, 86, 90, 111, 141, 155, 161, 166, 210, 212, 221, 252, 254, 295, 297, 300, 306, 365, 371, 404, 415, 447, 466, 485, 504, 513, 514, 524, 545, 629, 634, 640, 674, 685, 720, 767, 866, 910, 914, 930, 985, 1020, 1035, 1062, 1124, 1135, 1157, 1189, 1197, 1214]

cp's OEIS Frontend

A387049 Numbers k such that both k + sopfr(k) and k^2 + sopfr(k)^2 are prime, where sopfr = A001414.

Table of values

List of values