A056137 - cp's OEIS frontend

A056137 Number of ways in which n can be the longer leg (middle side) of an integer-sided right triangle.

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

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

cp's OEIS Frontend

A056137 Number of ways in which n can be the longer leg (middle side) of an integer-sided right triangle.

Table of values

List of values

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

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

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