A014626 - cp's OEIS frontend

A014626 Number of intersection points of diagonals of an n-gon in general position, plus number of vertices.

n	a(n)
0	0
1	1
2	2
3	3
4	5
5	10
6	21
7	42
8	78
9	135
10	220
11	341
12	507
13	728
14	1015
15	1380
16	1836
17	2397
18	3078
19	3895
20	4865
21	6006
22	7337
23	8878
24	10650
25	12675
26	14976
27	17577
28	20503
29	23780
30	27435
31	31496
32	35992
33	40953
34	46410
35	52395
36	58941
37	66082
38	73853
39	82290
40	91430
41	101311

[0, 1, 2, 3, 5, 10, 21, 42, 78, 135, 220, 341, 507, 728, 1015, 1380, 1836, 2397, 3078, 3895, 4865, 6006, 7337, 8878, 10650, 12675, 14976, 17577, 20503, 23780, 27435, 31496, 35992, 40953, 46410, 52395, 58941, 66082, 73853, 82290, 91430, 101311]

cp's OEIS Frontend

A014626 Number of intersection points of diagonals of an n-gon in general position, plus number of vertices.

Table of values

List of values