A124786 - cp's OEIS frontend

A124786 Numbers n such that n, sopfr(n) and sopfr(sopfr(n)) are all semiprimes.

n	a(n)
1	4
2	14
3	33
4	38
5	46
6	49
7	62
8	69
9	94
10	129
11	133
12	134
13	166
14	169
15	177
16	205
17	213
18	217
19	254
20	262
21	309
22	334
23	361
24	393
25	422
26	445
27	469
28	489
29	493
30	502
31	505
32	526
33	529
34	614
35	669
36	718
37	753
38	793
39	817
40	865
41	886
42	889
43	913
44	933
45	934
46	961
47	974
48	982
49	993
50	1006
51	1077
52	1126
53	1142

[4, 14, 33, 38, 46, 49, 62, 69, 94, 129, 133, 134, 166, 169, 177, 205, 213, 217, 254, 262, 309, 334, 361, 393, 422, 445, 469, 489, 493, 502, 505, 526, 529, 614, 669, 718, 753, 793, 817, 865, 886, 889, 913, 933, 934, 961, 974, 982, 993, 1006, 1077, 1126, 1142]

cp's OEIS Frontend

A124786 Numbers n such that n, sopfr(n) and sopfr(sopfr(n)) are all semiprimes.

Table of values

List of values