A107848 - cp's OEIS frontend

A107848 Number of subsets of the n-th roots of unity summing to a real number.

n	a(n)
1	2
2	4
3	4
4	8
5	8
6	24
7	16
8	48
9	40
10	144
11	64
12	336
13	128
14	864
15	416
16	1728
17	512
18	8304
19	1024
20	10656
21	4032
22	31104
23	4096
24	116256
25	9248
26	186624
27	40000
28	374976
29	32768
30	3537024
31	65536
32	2239488

[2, 4, 4, 8, 8, 24, 16, 48, 40, 144, 64, 336, 128, 864, 416, 1728, 512, 8304, 1024, 10656, 4032, 31104, 4096, 116256, 9248, 186624, 40000, 374976, 32768, 3537024, 65536, 2239488]

cp's OEIS Frontend

A107848 Number of subsets of the n-th roots of unity summing to a real number.

Table of values

List of values