A134612 - cp's OEIS frontend

A134612 Nonprime numbers such that the root mean cube of their prime factors is a prime (where the root mean cube of c and d is ((c^3+d^3)/2)^(1/3)).

n	a(n)
1	4
2	8
3	9
4	16
5	25
6	27
7	32
8	49
9	64
10	81
11	121
12	125
13	128
14	169
15	243
16	256
17	289
18	343
19	361
20	512
21	529
22	625
23	729
24	841
25	961
26	1024
27	1331
28	1369
29	1681
30	1849
31	2048
32	2187
33	2197
34	2209
35	2401
36	2809
37	3125
38	3481
39	3721
40	4096
41	4489
42	4913
43	5041
44	5329
45	6241
46	6561
47	6859
48	6889
49	7921

[4, 8, 9, 16, 25, 27, 32, 49, 64, 81, 121, 125, 128, 169, 243, 256, 289, 343, 361, 512, 529, 625, 729, 841, 961, 1024, 1331, 1369, 1681, 1849, 2048, 2187, 2197, 2209, 2401, 2809, 3125, 3481, 3721, 4096, 4489, 4913, 5041, 5329, 6241, 6561, 6859, 6889, 7921]

cp's OEIS Frontend

A134612 Nonprime numbers such that the root mean cube of their prime factors is a prime (where the root mean cube of c and d is ((c^3+d^3)/2)^(1/3)).

Table of values

List of values