A383468 - cp's OEIS frontend

A383468 Semiprimes s = A001358(k) such that k, s - k and s + k are also semiprimes.

n	a(n)
1	10
2	15
3	141
4	166
5	274
6	298
7	299
8	687
9	995
10	1115
11	1227
12	1299
13	1345
14	1891
15	1945
16	2194
17	2661
18	2998
19	3093
20	3287
21	3566
22	3781
23	3902
24	4174
25	4262
26	4497
27	4798
28	5378
29	5414
30	5758
31	6609
32	7094
33	7666
34	8354
35	8434
36	9566
37	10041
38	10342
39	11051
40	11091
41	11486
42	11582
43	11702
44	12279
45	12574
46	13154
47	13346
48	13387
49	13466

[10, 15, 141, 166, 274, 298, 299, 687, 995, 1115, 1227, 1299, 1345, 1891, 1945, 2194, 2661, 2998, 3093, 3287, 3566, 3781, 3902, 4174, 4262, 4497, 4798, 5378, 5414, 5758, 6609, 7094, 7666, 8354, 8434, 9566, 10041, 10342, 11051, 11091, 11486, 11582, 11702, 12279, 12574, 13154, 13346, 13387, 13466]

cp's OEIS Frontend

A383468 Semiprimes s = A001358(k) such that k, s - k and s + k are also semiprimes.

Table of values

List of values