A056138 - cp's OEIS frontend

A056138 Number of ways in which n can be the shorter leg (shortest side) of an integer-sided right triangle.

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

[0, 0, 1, 0, 1, 1, 1, 1, 2, 1, 1, 2, 1, 1, 3, 2, 1, 2, 1, 3, 3, 1, 1, 4, 2, 1, 3, 3, 1, 3, 1, 3, 4, 1, 3, 5, 1, 1, 4, 5, 1, 3, 1, 3, 5, 1, 1, 7, 2, 2, 4, 3, 1, 3, 3, 5, 4, 1, 1, 9, 1, 1, 5, 4, 4, 4, 1, 3, 4, 3, 1]

cp's OEIS Frontend

A056138 Number of ways in which n can be the shorter leg (shortest side) of an integer-sided right triangle.

Table of values

List of values

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

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

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