A365929 - cp's OEIS frontend

A365929 Number of intersections formed within a triangle by placing n points "in general position" on each of the three sides and connecting each point to each of the points on the other two sides using straight lines.

n	a(n)
0	0
1	0
2	15
3	108
4	396
5	1050
6	2295
7	4410
8	7728
9	12636
10	19575
11	29040
12	41580
13	57798
14	78351
15	103950
16	135360
17	173400
18	218943
19	272916
20	336300
21	410130
22	495495
23	593538
24	705456
25	832500
26	975975
27	1137240
28	1317708
29	1518846
30	1742175
31	1989270
32	2261760
33	2561328
34	2889711
35	3248700
36	3640140
37	4065930
38	4528023

[0, 0, 15, 108, 396, 1050, 2295, 4410, 7728, 12636, 19575, 29040, 41580, 57798, 78351, 103950, 135360, 173400, 218943, 272916, 336300, 410130, 495495, 593538, 705456, 832500, 975975, 1137240, 1317708, 1518846, 1742175, 1989270, 2261760, 2561328, 2889711, 3248700, 3640140, 4065930, 4528023]

cp's OEIS Frontend

A365929 Number of intersections formed within a triangle by placing n points "in general position" on each of the three sides and connecting each point to each of the points on the other two sides using straight lines.

Table of values

List of values