A334713 - cp's OEIS frontend

A334713 Number of ways to select four points from an n X n grid so that three of them form a triangle of nonzero area and the extra point is on one of the edges of the triangle.

n	a(n)
1	0
2	0
3	48
4	532
5	3088
6	11340
7	35264
8	88088
9	198912
10	407744
11	783344
12	1388196
13	2392592
14	3889292
15	6124032
16	9394536
17	14058816
18	20345400
19	29034288
20	40356156
21	55487952
22	75207892
23	100445632
24	131773104
25	171900864
26	221418336
27	282240816
28	356468556
29	447353616
30	555069252
31	686394560
32	840316880
33	1023123264
34	1238261952

[0, 0, 48, 532, 3088, 11340, 35264, 88088, 198912, 407744, 783344, 1388196, 2392592, 3889292, 6124032, 9394536, 14058816, 20345400, 29034288, 40356156, 55487952, 75207892, 100445632, 131773104, 171900864, 221418336, 282240816, 356468556, 447353616, 555069252, 686394560, 840316880, 1023123264, 1238261952]

cp's OEIS Frontend

A334713 Number of ways to select four points from an n X n grid so that three of them form a triangle of nonzero area and the extra point is on one of the edges of the triangle.

Table of values

List of values