A070894 - cp's OEIS frontend

A070894 Number of nonempty subsets of the set of vertices of a regular n-gon in the plane such that their center of gravity is the center of the polygon.

n	a(n)
2	1
3	1
4	3
5	1
6	9
7	1
8	15
9	7
10	33
11	1
12	99
13	1
14	129
15	37
16	255
17	1
18	999
19	1
20	1155
21	133
22	2049
23	1
24	9999
25	31
26	8193
27	511
28	16899
29	1
30	146853
31	1
32	65535
33	2053
34	131073
35	157
36	999999
37	1
38	524289
39	8197
40	1336335
41	1
42	11680389
43	1
44	4202499
45	54871
46	8388609
47	1
48	99999999
49	127
50	45435423
51	131077

[1, 1, 3, 1, 9, 1, 15, 7, 33, 1, 99, 1, 129, 37, 255, 1, 999, 1, 1155, 133, 2049, 1, 9999, 31, 8193, 511, 16899, 1, 146853, 1, 65535, 2053, 131073, 157, 999999, 1, 524289, 8197, 1336335, 1, 11680389, 1, 4202499, 54871, 8388609, 1, 99999999, 127, 45435423, 131077]

cp's OEIS Frontend

A070894 Number of nonempty subsets of the set of vertices of a regular n-gon in the plane such that their center of gravity is the center of the polygon.

Table of values

List of values