A329884 - cp's OEIS frontend

A329884 Nonunitary superperfect numbers: numbers k such that nusigma(nusigma(k)) = k, where nusigma(k) = sigma(k) - usigma(k) is the sum of nonunitary divisors of k (A048146).

n	a(n)
1	24
2	48
3	56
4	112
5	192
6	248
7	252
8	328
9	448
10	496
11	768
12	1016
13	1792
14	1984
15	2032
16	3240
17	6462
18	7936
19	8128
20	11616
21	11808
22	17412
23	20538
24	32512
25	49152
26	65528
27	114688
28	131056
29	507904
30	524224
31	786432
32	1048568
33	1835008
34	2080768
35	2096896
36	2097136
37	3145728
38	4194296
39	7340032

[24, 48, 56, 112, 192, 248, 252, 328, 448, 496, 768, 1016, 1792, 1984, 2032, 3240, 6462, 7936, 8128, 11616, 11808, 17412, 20538, 32512, 49152, 65528, 114688, 131056, 507904, 524224, 786432, 1048568, 1835008, 2080768, 2096896, 2097136, 3145728, 4194296, 7340032]

cp's OEIS Frontend

A329884 Nonunitary superperfect numbers: numbers k such that nusigma(nusigma(k)) = k, where nusigma(k) = sigma(k) - usigma(k) is the sum of nonunitary divisors of k (A048146).

Table of values

List of values