A073477 - cp's OEIS frontend

A073477 Least k such that 2^n = k^2-sigma(k)*phi(k).

n	a(n)
0	2
1	4
2	8
3	16
4	32
5	12
6	20
7	256
8	44
9	1024
10	2048
11	4096
12	8192
13	16384
14	992
15	65536
16	724
17	262144
18	2080
19	1048576
20	16256
21	4194304
22	8388608
23	16777216
24	33554432
25	67108864
26	48832
27	268435456
28	536870912
29	1073741824
30	471808
31	4294967296
32	8589934592
33	17179869184
34	34359738368

[2, 4, 8, 16, 32, 12, 20, 256, 44, 1024, 2048, 4096, 8192, 16384, 992, 65536, 724, 262144, 2080, 1048576, 16256, 4194304, 8388608, 16777216, 33554432, 67108864, 48832, 268435456, 536870912, 1073741824, 471808, 4294967296, 8589934592, 17179869184, 34359738368]

cp's OEIS Frontend

A073477 Least k such that 2^n = k^2-sigma(k)*phi(k).

Table of values

List of values