A123255 - cp's OEIS frontend

A123255 Numbers k such that 4k+1, 4k+2, and 4k+3 are all semiprimes.

n	a(n)
1	8
2	21
3	23
4	30
5	35
6	50
7	53
8	54
9	75
10	98
11	111
12	158
13	174
14	210
15	230
16	260
17	284
18	315
19	336
20	350
21	410
22	440
23	459
24	473
25	485
26	495
27	525
28	545
29	554
30	576
31	590
32	608
33	615
34	629
35	660
36	680
37	683
38	774
39	846
40	900
41	923
42	966
43	975
44	989
45	1071
46	1103
47	1133
48	1148
49	1220
50	1400
51	1430
52	1463
53	1499

[8, 21, 23, 30, 35, 50, 53, 54, 75, 98, 111, 158, 174, 210, 230, 260, 284, 315, 336, 350, 410, 440, 459, 473, 485, 495, 525, 545, 554, 576, 590, 608, 615, 629, 660, 680, 683, 774, 846, 900, 923, 966, 975, 989, 1071, 1103, 1133, 1148, 1220, 1400, 1430, 1463, 1499]

cp's OEIS Frontend

A123255 Numbers k such that 4k+1, 4k+2, and 4k+3 are all semiprimes.

Table of values

List of values