A070102 - cp's OEIS frontend

A070102 Number of obtuse integer triangles with perimeter n and relatively prime side lengths.

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

[0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 2, 1, 3, 2, 3, 2, 5, 3, 6, 2, 8, 5, 9, 5, 9, 6, 11, 6, 14, 9, 14, 9, 17, 11, 19, 12, 19, 15, 23, 13, 27, 18, 26, 16, 32, 20, 33, 21, 34, 26, 40, 23, 42, 29, 42, 29, 50, 32, 53, 35, 48, 41, 58, 37, 64, 45, 60, 42, 71]

cp's OEIS Frontend

A070102 Number of obtuse integer triangles with perimeter n and relatively prime side lengths.

Table of values

List of values

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

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

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