A358782 - cp's OEIS frontend

A358782 The number of regions formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter.

n	a(n)
2	1
3	7
4	12
5	66
6	85
7	281
8	264
9	802
10	821
11	1893
12	1740
13	3810
14	3725
15	6871
16	6448
17	11748
18	11125
19	18317
20	17160
21	27616
22	26797
23	40067
24	37176
25	56826
26	54653
27	77707
28	74788
29	103734
30	101041
31	136835
32	131744
33	176584
34	172109
35	223931
36	216900
37	281090
38	273829
39	348583
40	337480
41	425950
42	416641

[1, 7, 12, 66, 85, 281, 264, 802, 821, 1893, 1740, 3810, 3725, 6871, 6448, 11748, 11125, 18317, 17160, 27616, 26797, 40067, 37176, 56826, 54653, 77707, 74788, 103734, 101041, 136835, 131744, 176584, 172109, 223931, 216900, 281090, 273829, 348583, 337480, 425950, 416641]

cp's OEIS Frontend

A358782 The number of regions formed when every pair of n points, placed at the vertices of a regular n-gon, are connected by a circle and where the points lie at the ends of the circle's diameter.

Table of values

List of values