A268186 - cp's OEIS frontend

A268186 Numbers n such that n^2 + 2, n^2 - 2, n + 2 and n - 2 are all semiprimes.

n	a(n)
1	12
2	53
3	84
4	204
5	207
6	251
7	379
8	413
9	456
10	471
11	483
12	631
13	687
14	705
15	765
16	783
17	1079
18	1135
19	1140
20	1167
21	1269
22	1335
23	1347
24	1395
25	1475
26	1515
27	1587
28	1641
29	1709
30	1767
31	1851
32	1855
33	1943
34	1959
35	2049
36	2157
37	2319
38	2325
39	2575
40	2843
41	2865
42	3099
43	3153
44	3225
45	3267
46	3601
47	3779

[12, 53, 84, 204, 207, 251, 379, 413, 456, 471, 483, 631, 687, 705, 765, 783, 1079, 1135, 1140, 1167, 1269, 1335, 1347, 1395, 1475, 1515, 1587, 1641, 1709, 1767, 1851, 1855, 1943, 1959, 2049, 2157, 2319, 2325, 2575, 2843, 2865, 3099, 3153, 3225, 3267, 3601, 3779]

cp's OEIS Frontend

A268186 Numbers n such that n^2 + 2, n^2 - 2, n + 2 and n - 2 are all semiprimes.

Table of values

List of values