A174797 - cp's OEIS frontend

A174797 Numbers n such that both semiprime(n) and semiprime(n+1) are even.

n	a(n)
1	1
2	4
3	21
4	87
5	120
6	141
7	142
8	168
9	188
10	320
11	363
12	387
13	434
14	464
15	496
16	539
17	593
18	675
19	721
20	794
21	810
22	995
23	1032
24	1105
25	1147
26	1166
27	1228
28	1356
29	1391
30	1477
31	1478
32	1498
33	1702
34	1771
35	1790
36	1797
37	1803
38	1818
39	1849
40	1850
41	1881
42	1967
43	2016
44	2039
45	2052
46	2065
47	2091

[1, 4, 21, 87, 120, 141, 142, 168, 188, 320, 363, 387, 434, 464, 496, 539, 593, 675, 721, 794, 810, 995, 1032, 1105, 1147, 1166, 1228, 1356, 1391, 1477, 1478, 1498, 1702, 1771, 1790, 1797, 1803, 1818, 1849, 1850, 1881, 1967, 2016, 2039, 2052, 2065, 2091]

cp's OEIS Frontend

A174797 Numbers n such that both semiprime(n) and semiprime(n+1) are even.

Table of values

List of values