A235646 - cp's OEIS frontend

A235646 Primes p such that b=2p+1 is semiprime, c=2b+1 is 3-almost prime and d=2*c+1 is 4-almost prime.

n	a(n)
1	43
2	1429
3	2239
4	3319
5	4831
6	6379
7	8821
8	10501
9	11383
10	12781
11	13003
12	14771
13	15091
14	16063
15	16759
16	18223
17	19213
18	19681
19	20021
20	22571
21	24103
22	24109
23	24571
24	25939
25	27271
26	28933
27	29833
28	30241
29	31723
30	33679
31	33811
32	34381
33	34781
34	35591
35	35863
36	39373

[43, 1429, 2239, 3319, 4831, 6379, 8821, 10501, 11383, 12781, 13003, 14771, 15091, 16063, 16759, 18223, 19213, 19681, 20021, 22571, 24103, 24109, 24571, 25939, 27271, 28933, 29833, 30241, 31723, 33679, 33811, 34381, 34781, 35591, 35863, 39373]

cp's OEIS Frontend

A235646 Primes p such that b=2p+1 is semiprime, c=2b+1 is 3-almost prime and d=2*c+1 is 4-almost prime.

Table of values

List of values

cp's OEIS Frontend

A235646 Primes p such that b=2*p+1 is semiprime, c=2*b+1 is 3-almost prime and d=2*c+1 is 4-almost prime.

Table of values

List of values

A235646 Primes p such that b=2p+1 is semiprime, c=2b+1 is 3-almost prime and d=2*c+1 is 4-almost prime.