A277993 - cp's OEIS frontend

A277993 Sophie Germain primes p such that p + 2 and p - 2 are semiprimes.

n	a(n)
1	23
2	53
3	89
4	113
5	131
6	251
7	293
8	491
9	683
10	719
11	953
12	1439
13	1499
14	1511
15	1733
16	2393
17	3491
18	3779
19	5171
20	7043
21	7151
22	7433
23	7649
24	7901
25	8069
26	8663
27	9689
28	10781
29	12011
30	12653
31	13049
32	13229
33	13451
34	13553
35	14669
36	15569
37	16001
38	16253
39	18899
40	19709
41	20411
42	22469
43	22751
44	23099

[23, 53, 89, 113, 131, 251, 293, 491, 683, 719, 953, 1439, 1499, 1511, 1733, 2393, 3491, 3779, 5171, 7043, 7151, 7433, 7649, 7901, 8069, 8663, 9689, 10781, 12011, 12653, 13049, 13229, 13451, 13553, 14669, 15569, 16001, 16253, 18899, 19709, 20411, 22469, 22751, 23099]

cp's OEIS Frontend

A277993 Sophie Germain primes p such that p + 2 and p - 2 are semiprimes.

Table of values

List of values