A055008 - cp's OEIS frontend

A055008 Numbers k such that gcd(phi(k), sigma(k)) = 1 with phi = A000010, sigma = A000203.

n	a(n)
1	1
2	2
3	4
4	8
5	9
6	16
7	25
8	32
9	36
10	50
11	64
12	81
13	100
14	121
15	128
16	144
17	225
18	242
19	256
20	289
21	324
22	400
23	484
24	512
25	529
26	576
27	578
28	625
29	729
30	800
31	841
32	900
33	1024
34	1058
35	1089
36	1156
37	1250
38	1296
39	1600
40	1681
41	1682
42	1936
43	2025
44	2048
45	2116
46	2209
47	2304
48	2312
49	2401
50	2500
51	2601

[1, 2, 4, 8, 9, 16, 25, 32, 36, 50, 64, 81, 100, 121, 128, 144, 225, 242, 256, 289, 324, 400, 484, 512, 529, 576, 578, 625, 729, 800, 841, 900, 1024, 1058, 1089, 1156, 1250, 1296, 1600, 1681, 1682, 1936, 2025, 2048, 2116, 2209, 2304, 2312, 2401, 2500, 2601]

cp's OEIS Frontend

A055008 Numbers k such that gcd(phi(k), sigma(k)) = 1 with phi = A000010, sigma = A000203.

Table of values

List of values