A156684 - cp's OEIS frontend

A156684 The number of primitive Pythagorean triples A^2+B^2=C^2 with 0 < A < B < C and gcd(A,B)=1, and both legs less than n.

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

[0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 9, 10, 10, 10, 10, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 15, 15, 15, 15, 16, 16]

cp's OEIS Frontend

A156684 The number of primitive Pythagorean triples A^2+B^2=C^2 with 0 < A < B < C and gcd(A,B)=1, and both legs less than n.

Table of values

List of values

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

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

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