A334710 - cp's OEIS frontend

A334710 Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k 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	0
4	0
5	0
6	0
7	0
8	6
9	6
10	0
11	0
12	32
13	48
14	32
15	0
16	0
17	100
18	168
19	168
20	100
21	0
22	0
23	240
24	456
25	532
26	456
27	240
28	0
29	0
30	490
31	990
32	1312
33	1312
34	990
35	490
36	0
37	0
38	896
39	1920
40	2652
41	3088
42	2652
43	1920
44	896
45	0
46	0
47	1512
48	3360
49	4972
50	5964
51	5964
52	4972
53	3360
54	1512
55	0
56	0
57	2400
58	5520
59	8420
60	10816
61	11340
62	10816
63	8420
64	5520
65	2400
66	0

[0, 0, 0, 0, 0, 0, 0, 6, 6, 0, 0, 32, 48, 32, 0, 0, 100, 168, 168, 100, 0, 0, 240, 456, 532, 456, 240, 0, 0, 490, 990, 1312, 1312, 990, 490, 0, 0, 896, 1920, 2652, 3088, 2652, 1920, 896, 0, 0, 1512, 3360, 4972, 5964, 5964, 4972, 3360, 1512, 0, 0, 2400, 5520, 8420, 10816, 11340, 10816, 8420, 5520, 2400, 0]

cp's OEIS Frontend

A334710 Array read by antidiagonals: T(n,k) (n>=1, k>=1) = number of ways to select four points from an n X k 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