A176804 - cp's OEIS frontend

A176804 Lesser of twin primes p such that p = semiprime(k)/2 and p + 2 = semiprime(k+2)/2 for some integer k.

n	a(n)
1	3
2	11
3	17
4	41
5	179
6	197
7	239
8	281
9	311
10	419
11	431
12	461
13	521
14	599
15	641
16	821
17	827
18	857
19	1019
20	1049
21	1061
22	1091
23	1151
24	1229
25	1289
26	1319
27	1427
28	1481
29	1487
30	1607
31	1667
32	1697
33	1721
34	1871
35	1877
36	1931
37	1997
38	2027
39	2081
40	2111
41	2141
42	2309
43	2339
44	2591
45	2687
46	2789

[3, 11, 17, 41, 179, 197, 239, 281, 311, 419, 431, 461, 521, 599, 641, 821, 827, 857, 1019, 1049, 1061, 1091, 1151, 1229, 1289, 1319, 1427, 1481, 1487, 1607, 1667, 1697, 1721, 1871, 1877, 1931, 1997, 2027, 2081, 2111, 2141, 2309, 2339, 2591, 2687, 2789]

cp's OEIS Frontend

A176804 Lesser of twin primes p such that p = semiprime(k)/2 and p + 2 = semiprime(k+2)/2 for some integer k.

Table of values

List of values