A088011 - cp's OEIS frontend

A088011 Even and odd solutions to abs(sigma(x)-2x) <= log(x). Numbers n whose abundance-radius does not exceed log(n).

n	a(n)
1	4
2	6
3	8
4	10
5	16
6	20
7	28
8	32
9	64
10	70
11	88
12	104
13	110
14	128
15	136
16	152
17	256
18	464
19	496
20	512
21	592
22	650
23	884
24	1024
25	1155
26	1888
27	1952
28	2048
29	2144
30	4030
31	4096
32	5830
33	8128
34	8192
35	8384
36	8925
37	11096
38	16384
39	17816
40	18632
41	18904
42	32128
43	32445
44	32768
45	32896
46	33664
47	45356

[4, 6, 8, 10, 16, 20, 28, 32, 64, 70, 88, 104, 110, 128, 136, 152, 256, 464, 496, 512, 592, 650, 884, 1024, 1155, 1888, 1952, 2048, 2144, 4030, 4096, 5830, 8128, 8192, 8384, 8925, 11096, 16384, 17816, 18632, 18904, 32128, 32445, 32768, 32896, 33664, 45356]

cp's OEIS Frontend

A088011 Even and odd solutions to abs(sigma(x)-2x) <= log(x). Numbers n whose abundance-radius does not exceed log(n).

Table of values

List of values