A354490 - cp's OEIS frontend

A354490 T(w,h) with 2 <= h <= w is the number of quadrilaterals as defined in A353532 with diagonals intersecting at integer coordinates, where T(w,h) is a triangle read by rows.

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	3
10	1
11	0
12	0
13	3
14	3
15	4
16	4
17	3
18	6
19	6
20	6
21	12
22	0
23	2
24	6
25	7
26	9
27	15
28	13
29	6
30	6
31	10
32	12
33	12
34	30
35	18
36	27
37	8
38	4
39	11
40	11
41	12
42	24
43	25
44	33
45	41
46	18
47	10
48	17
49	21
50	17
51	36
52	24
53	35
54	32
55	38
56	0
57	8
58	17
59	19
60	21
61	51
62	43
63	65
64	84
65	87
66	57
67	62
68	15
69	24
70	31
71	25
72	49
73	31
74	48
75	45
76	53
77	33
78	76
79	0

[0, 0, 0, 0, 1, 0, 1, 3, 1, 0, 0, 3, 3, 4, 4, 3, 6, 6, 6, 12, 0, 2, 6, 7, 9, 15, 13, 6, 6, 10, 12, 12, 30, 18, 27, 8, 4, 11, 11, 12, 24, 25, 33, 41, 18, 10, 17, 21, 17, 36, 24, 35, 32, 38, 0, 8, 17, 19, 21, 51, 43, 65, 84, 87, 57, 62, 15, 24, 31, 25, 49, 31, 48, 45, 53, 33, 76, 0]

cp's OEIS Frontend

A354490 T(w,h) with 2 <= h <= w is the number of quadrilaterals as defined in A353532 with diagonals intersecting at integer coordinates, where T(w,h) is a triangle read by rows.

Table of values

List of values

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	3
10	1
11	0
12	0
13	3
14	3
15	4
16	4
17	3
18	6
19	6
20	6
21	12
22	0
23	2
24	6
25	7
26	9
27	15
28	13
29	6
30	6
31	10
32	12
33	12
34	30
35	18
36	27
37	8
38	4
39	11
40	11
41	12
42	24
43	25
44	33
45	41
46	18
47	10
48	17
49	21
50	17
51	36
52	24
53	35
54	32
55	38
56	0
57	8
58	17
59	19
60	21
61	51
62	43
63	65
64	84
65	87
66	57
67	62
68	15
69	24
70	31
71	25
72	49
73	31
74	48
75	45
76	53
77	33
78	76
79	0

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	3
10	1
11	0
12	0
13	3
14	3
15	4
16	4
17	3
18	6
19	6
20	6
21	12
22	0
23	2
24	6
25	7
26	9
27	15
28	13
29	6
30	6
31	10
32	12
33	12
34	30
35	18
36	27
37	8
38	4
39	11
40	11
41	12
42	24
43	25
44	33
45	41
46	18
47	10
48	17
49	21
50	17
51	36
52	24
53	35
54	32
55	38
56	0
57	8
58	17
59	19
60	21
61	51
62	43
63	65
64	84
65	87
66	57
67	62
68	15
69	24
70	31
71	25
72	49
73	31
74	48
75	45
76	53
77	33
78	76
79	0

n	a(n)
2	0
3	0
4	0
5	0
6	1
7	0
8	1
9	3
10	1
11	0
12	0
13	3
14	3
15	4
16	4
17	3
18	6
19	6
20	6
21	12
22	0
23	2
24	6
25	7
26	9
27	15
28	13
29	6
30	6
31	10
32	12
33	12
34	30
35	18
36	27
37	8
38	4
39	11
40	11
41	12
42	24
43	25
44	33
45	41
46	18
47	10
48	17
49	21
50	17
51	36
52	24
53	35
54	32
55	38
56	0
57	8
58	17
59	19
60	21
61	51
62	43
63	65
64	84
65	87
66	57
67	62
68	15
69	24
70	31
71	25
72	49
73	31
74	48
75	45
76	53
77	33
78	76
79	0