A320542 - cp's OEIS frontend

A320542 a(n) is the number of ways to select 3 distinct points forming a triangle of unsigned area = n from a square of grid points with side length n, divided by 4.

n	a(n)
1	0
2	2
3	12
4	33
5	74
6	258
7	294
8	661
9	1258
10	1940
11	2044
12	5254
13	4136
14	7738
15	12902
16	13357
17	13142
18	29540
19	21214
20	40816
21	50388
22	50012
23	47680
24	101662
25	83684
26	99690
27	140638
28	158568
29	126720
30	282042
31	167514
32	253779
33	318556
34	302230
35	386186
36	579833
37	350556
38	478058
39	629582
40	765498

[0, 2, 12, 33, 74, 258, 294, 661, 1258, 1940, 2044, 5254, 4136, 7738, 12902, 13357, 13142, 29540, 21214, 40816, 50388, 50012, 47680, 101662, 83684, 99690, 140638, 158568, 126720, 282042, 167514, 253779, 318556, 302230, 386186, 579833, 350556, 478058, 629582, 765498]

cp's OEIS Frontend

A320542 a(n) is the number of ways to select 3 distinct points forming a triangle of unsigned area = n from a square of grid points with side length n, divided by 4.

Table of values

List of values