A280653 - cp's OEIS frontend

A280653 Triangle read by rows: T(n,k), n>=k>=1, is the number of acute triangles with integer coordinates that have a bounding box of size n X k.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	8
7	0
8	0
9	6
10	24
11	0
12	0
13	6
14	22
15	40
16	0
17	0
18	2
19	20
20	46
21	64
22	0
23	0
24	2
25	20
26	44
27	70
28	96
29	0
30	0
31	2
32	8
33	42
34	76
35	98
36	136
37	0
38	0
39	2
40	8
41	34
42	74
43	104
44	138
45	176
46	0
47	0
48	2
49	8
50	22
51	72
52	110
53	148
54	186
55	208
56	0
57	0
58	2
59	4
60	18
61	56
62	112
63	146
64	188
65	234
66	264
67	0
68	0
69	2
70	4
71	18

[0, 0, 0, 0, 0, 8, 0, 0, 6, 24, 0, 0, 6, 22, 40, 0, 0, 2, 20, 46, 64, 0, 0, 2, 20, 44, 70, 96, 0, 0, 2, 8, 42, 76, 98, 136, 0, 0, 2, 8, 34, 74, 104, 138, 176, 0, 0, 2, 8, 22, 72, 110, 148, 186, 208, 0, 0, 2, 4, 18, 56, 112, 146, 188, 234, 264, 0, 0, 2, 4, 18]

cp's OEIS Frontend

A280653 Triangle read by rows: T(n,k), n>=k>=1, is the number of acute triangles with integer coordinates that have a bounding box of size n X k.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	8
7	0
8	0
9	6
10	24
11	0
12	0
13	6
14	22
15	40
16	0
17	0
18	2
19	20
20	46
21	64
22	0
23	0
24	2
25	20
26	44
27	70
28	96
29	0
30	0
31	2
32	8
33	42
34	76
35	98
36	136
37	0
38	0
39	2
40	8
41	34
42	74
43	104
44	138
45	176
46	0
47	0
48	2
49	8
50	22
51	72
52	110
53	148
54	186
55	208
56	0
57	0
58	2
59	4
60	18
61	56
62	112
63	146
64	188
65	234
66	264
67	0
68	0
69	2
70	4
71	18

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	8
7	0
8	0
9	6
10	24
11	0
12	0
13	6
14	22
15	40
16	0
17	0
18	2
19	20
20	46
21	64
22	0
23	0
24	2
25	20
26	44
27	70
28	96
29	0
30	0
31	2
32	8
33	42
34	76
35	98
36	136
37	0
38	0
39	2
40	8
41	34
42	74
43	104
44	138
45	176
46	0
47	0
48	2
49	8
50	22
51	72
52	110
53	148
54	186
55	208
56	0
57	0
58	2
59	4
60	18
61	56
62	112
63	146
64	188
65	234
66	264
67	0
68	0
69	2
70	4
71	18

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	8
7	0
8	0
9	6
10	24
11	0
12	0
13	6
14	22
15	40
16	0
17	0
18	2
19	20
20	46
21	64
22	0
23	0
24	2
25	20
26	44
27	70
28	96
29	0
30	0
31	2
32	8
33	42
34	76
35	98
36	136
37	0
38	0
39	2
40	8
41	34
42	74
43	104
44	138
45	176
46	0
47	0
48	2
49	8
50	22
51	72
52	110
53	148
54	186
55	208
56	0
57	0
58	2
59	4
60	18
61	56
62	112
63	146
64	188
65	234
66	264
67	0
68	0
69	2
70	4
71	18