A070107 - cp's OEIS frontend

A070107 Number of integer triangles with perimeter n and relatively prime side lengths which are obtuse and isosceles.

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	0
9	0
10	0
11	1
12	0
13	0
14	0
15	1
16	0
17	0
18	1
19	1
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	0
29	1
30	0
31	2
32	1
33	0
34	1
35	1
36	0
37	1
38	1
39	2
40	1
41	2
42	1
43	2
44	0
45	1
46	1
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	0
55	2
56	1
57	1
58	1
59	3
60	1
61	2
62	1
63	2
64	1
65	3
66	2
67	3
68	1
69	2
70	1
71	3
72	1
73	3
74	2
75	1
76	1
77	1
78	0
79	4
80	2
81	2
82	2
83	4
84	1
85	3
86	2
87	3
88	2
89	4
90	1

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

cp's OEIS Frontend

A070107 Number of integer triangles with perimeter n and relatively prime side lengths which are obtuse and isosceles.

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	0
10	0
11	1
12	0
13	0
14	0
15	1
16	0
17	0
18	1
19	1
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	0
29	1
30	0
31	2
32	1
33	0
34	1
35	1
36	0
37	1
38	1
39	2
40	1
41	2
42	1
43	2
44	0
45	1
46	1
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	0
55	2
56	1
57	1
58	1
59	3
60	1
61	2
62	1
63	2
64	1
65	3
66	2
67	3
68	1
69	2
70	1
71	3
72	1
73	3
74	2
75	1
76	1
77	1
78	0
79	4
80	2
81	2
82	2
83	4
84	1
85	3
86	2
87	3
88	2
89	4
90	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	0
9	0
10	0
11	1
12	0
13	0
14	0
15	1
16	0
17	0
18	1
19	1
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	0
29	1
30	0
31	2
32	1
33	0
34	1
35	1
36	0
37	1
38	1
39	2
40	1
41	2
42	1
43	2
44	0
45	1
46	1
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	0
55	2
56	1
57	1
58	1
59	3
60	1
61	2
62	1
63	2
64	1
65	3
66	2
67	3
68	1
69	2
70	1
71	3
72	1
73	3
74	2
75	1
76	1
77	1
78	0
79	4
80	2
81	2
82	2
83	4
84	1
85	3
86	2
87	3
88	2
89	4
90	1

n	a(n)
1	0
2	0
3	0
4	0
5	0
6	0
7	1
8	0
9	0
10	0
11	1
12	0
13	0
14	0
15	1
16	0
17	0
18	1
19	1
20	0
21	0
22	0
23	1
24	1
25	1
26	1
27	1
28	0
29	1
30	0
31	2
32	1
33	0
34	1
35	1
36	0
37	1
38	1
39	2
40	1
41	2
42	1
43	2
44	0
45	1
46	1
47	2
48	1
49	1
50	1
51	2
52	1
53	2
54	0
55	2
56	1
57	1
58	1
59	3
60	1
61	2
62	1
63	2
64	1
65	3
66	2
67	3
68	1
69	2
70	1
71	3
72	1
73	3
74	2
75	1
76	1
77	1
78	0
79	4
80	2
81	2
82	2
83	4
84	1
85	3
86	2
87	3
88	2
89	4
90	1