A378149 - cp's OEIS frontend

A378149 a(n) is the number of distinct integer-sided right trapezoids with exactly one pair of parallel sides and area n.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	0
12	1
13	0
14	1
15	1
16	0
17	0
18	2
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	1
27	1
28	0
29	0
30	3
31	0
32	1
33	1
34	1
35	1
36	2
37	0
38	1
39	1
40	2
41	0
42	4
43	0
44	0
45	2
46	1
47	0
48	3
49	0
50	2
51	1
52	0
53	0
54	4
55	1
56	1
57	1
58	1
59	0
60	3
61	0
62	1
63	2
64	1
65	1
66	5
67	0
68	1
69	1
70	2
71	0
72	4
73	0
74	1
75	3
76	1
77	0
78	5
79	0
80	2
81	2
82	1
83	0
84	3
85	1
86	1
87	1

[0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 2, 0, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 3, 0, 1, 1, 1, 1, 2, 0, 1, 1, 2, 0, 4, 0, 0, 2, 1, 0, 3, 0, 2, 1, 0, 0, 4, 1, 1, 1, 1, 0, 3, 0, 1, 2, 1, 1, 5, 0, 1, 1, 2, 0, 4, 0, 1, 3, 1, 0, 5, 0, 2, 2, 1, 0, 3, 1, 1, 1]

cp's OEIS Frontend

A378149 a(n) is the number of distinct integer-sided right trapezoids with exactly one pair of parallel sides and area n.

Table of values

List of values

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	0
12	1
13	0
14	1
15	1
16	0
17	0
18	2
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	1
27	1
28	0
29	0
30	3
31	0
32	1
33	1
34	1
35	1
36	2
37	0
38	1
39	1
40	2
41	0
42	4
43	0
44	0
45	2
46	1
47	0
48	3
49	0
50	2
51	1
52	0
53	0
54	4
55	1
56	1
57	1
58	1
59	0
60	3
61	0
62	1
63	2
64	1
65	1
66	5
67	0
68	1
69	1
70	2
71	0
72	4
73	0
74	1
75	3
76	1
77	0
78	5
79	0
80	2
81	2
82	1
83	0
84	3
85	1
86	1
87	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	0
12	1
13	0
14	1
15	1
16	0
17	0
18	2
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	1
27	1
28	0
29	0
30	3
31	0
32	1
33	1
34	1
35	1
36	2
37	0
38	1
39	1
40	2
41	0
42	4
43	0
44	0
45	2
46	1
47	0
48	3
49	0
50	2
51	1
52	0
53	0
54	4
55	1
56	1
57	1
58	1
59	0
60	3
61	0
62	1
63	2
64	1
65	1
66	5
67	0
68	1
69	1
70	2
71	0
72	4
73	0
74	1
75	3
76	1
77	0
78	5
79	0
80	2
81	2
82	1
83	0
84	3
85	1
86	1
87	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	1
10	1
11	0
12	1
13	0
14	1
15	1
16	0
17	0
18	2
19	0
20	0
21	1
22	1
23	0
24	1
25	0
26	1
27	1
28	0
29	0
30	3
31	0
32	1
33	1
34	1
35	1
36	2
37	0
38	1
39	1
40	2
41	0
42	4
43	0
44	0
45	2
46	1
47	0
48	3
49	0
50	2
51	1
52	0
53	0
54	4
55	1
56	1
57	1
58	1
59	0
60	3
61	0
62	1
63	2
64	1
65	1
66	5
67	0
68	1
69	1
70	2
71	0
72	4
73	0
74	1
75	3
76	1
77	0
78	5
79	0
80	2
81	2
82	1
83	0
84	3
85	1
86	1
87	1