A333643 - cp's OEIS frontend

A333643 Number of regions in a polygon whose boundary consists of n+2 equally spaced points around the arc of a semicircle. See Comments for precise definition.

n	a(n)
1	1
2	4
3	11
4	25
5	50
6	91
7	154
8	234
9	375
10	550
11	769
12	1079
13	1456
14	1783
15	2500
16	3196
17	3987
18	5016
19	6175
20	7348
21	9086
22	10879
23	12836
24	15250
25	17875
26	20682
27	24129
28	27811
29	31419
30	36425
31	41416
32	46664
33	52921
34	59500
35	66489
36	74481
37	82954
38	91807
39	102050
40	112750
41	123700
42	136654

[1, 4, 11, 25, 50, 91, 154, 234, 375, 550, 769, 1079, 1456, 1783, 2500, 3196, 3987, 5016, 6175, 7348, 9086, 10879, 12836, 15250, 17875, 20682, 24129, 27811, 31419, 36425, 41416, 46664, 52921, 59500, 66489, 74481, 82954, 91807, 102050, 112750, 123700, 136654]

cp's OEIS Frontend

A333643 Number of regions in a polygon whose boundary consists of n+2 equally spaced points around the arc of a semicircle. See Comments for precise definition.

Table of values

List of values