A334705 - cp's OEIS frontend

A334705 Triangle read by rows: T(n,k) (1 <= k <= n) = number of ways to choose three points from an n X k grid of points which are the vertices of a triangle of nonzero area.

n	a(n)
1	0
2	0
3	4
4	0
5	18
6	76
7	0
8	48
9	200
10	516
11	0
12	100
13	412
14	1056
15	2148
16	0
17	180
18	738
19	1884
20	3820
21	6768
22	0
23	294
24	1200
25	3052
26	6176
27	10922
28	17600
29	0
30	448
31	1824
32	4628
33	9352
34	16516
35	26588
36	40120
37	0
38	648
39	2632
40	6668
41	13456
42	23740
43	38192
44	57588
45	82608
46	0
47	900
48	3650
49	9232
50	18612
51	32812
52	52758
53	79508
54	114000
55	157252

[0, 0, 4, 0, 18, 76, 0, 48, 200, 516, 0, 100, 412, 1056, 2148, 0, 180, 738, 1884, 3820, 6768, 0, 294, 1200, 3052, 6176, 10922, 17600, 0, 448, 1824, 4628, 9352, 16516, 26588, 40120, 0, 648, 2632, 6668, 13456, 23740, 38192, 57588, 82608, 0, 900, 3650, 9232, 18612, 32812, 52758, 79508, 114000, 157252]

cp's OEIS Frontend

A334705 Triangle read by rows: T(n,k) (1 <= k <= n) = number of ways to choose three points from an n X k grid of points which are the vertices of a triangle of nonzero area.

Table of values

List of values