A271101 - cp's OEIS frontend

A271101 Squarefree semiprimes (A006881) whose average prime factor is prime.

n	a(n)
1	21
2	33
3	57
4	69
5	85
6	93
7	129
8	133
9	145
10	177
11	205
12	213
13	217
14	237
15	249
16	253
17	265
18	309
19	393
20	417
21	445
22	469
23	489
24	493
25	505
26	517
27	553
28	565
29	573
30	597
31	633
32	669
33	685
34	697
35	753
36	781
37	793
38	813
39	817
40	865
41	889
42	913
43	933
44	949
45	973
46	985
47	993
48	1057
49	1077
50	1137
51	1149
52	1177
53	1257
54	1273
55	1285
56	1329

[21, 33, 57, 69, 85, 93, 129, 133, 145, 177, 205, 213, 217, 237, 249, 253, 265, 309, 393, 417, 445, 469, 489, 493, 505, 517, 553, 565, 573, 597, 633, 669, 685, 697, 753, 781, 793, 813, 817, 865, 889, 913, 933, 949, 973, 985, 993, 1057, 1077, 1137, 1149, 1177, 1257, 1273, 1285, 1329]

cp's OEIS Frontend

A271101 Squarefree semiprimes (A006881) whose average prime factor is prime.

Table of values

List of values