A141847 - cp's OEIS frontend

A141847 Least number k such that sigma_2(k) >= 2^n.

n	a(n)
1	2
2	2
3	3
4	4
5	6
6	8
7	10
8	15
9	20
10	28
11	40
12	54
13	78
14	108
15	156
16	216
17	300
18	420
19	600
20	840
21	1188
22	1680
23	2340
24	3360
25	4680
26	6600
27	9240
28	13200
29	18480
30	26400
31	36960
32	52560
33	73920
34	105000
35	147840
36	209160
37	294840
38	415800
39	589680
40	831600
41	1178100
42	1663200
43	2353680

[2, 2, 3, 4, 6, 8, 10, 15, 20, 28, 40, 54, 78, 108, 156, 216, 300, 420, 600, 840, 1188, 1680, 2340, 3360, 4680, 6600, 9240, 13200, 18480, 26400, 36960, 52560, 73920, 105000, 147840, 209160, 294840, 415800, 589680, 831600, 1178100, 1663200, 2353680]

cp's OEIS Frontend

A141847 Least number k such that sigma_2(k) >= 2^n.

Table of values

List of values