A051493 - cp's OEIS frontend

A051493 Triangles with perimeter n and relatively prime integer side lengths.

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	2
10	1
11	4
12	2
13	5
14	2
15	5
16	4
17	8
18	4
19	10
20	6
21	9
22	6
23	14
24	8
25	15
26	9
27	16
28	12
29	21
30	11
31	24
32	16
33	22
34	16
35	27
36	18
37	33
38	20
39	31
40	24
41	40
42	23
43	44
44	30
45	39
46	30
47	52
48	32
49	54
50	35
51	52
52	42
53	65
54	38
55	65
56	48
57	64
58	49
59	80
60	48
61	85
62	56
63	77
64	64
65	90
66	58
67	102
68	72
69	93
70	69
71	114
72	72
73	120
74	81

[0, 0, 1, 0, 1, 0, 2, 1, 2, 1, 4, 2, 5, 2, 5, 4, 8, 4, 10, 6, 9, 6, 14, 8, 15, 9, 16, 12, 21, 11, 24, 16, 22, 16, 27, 18, 33, 20, 31, 24, 40, 23, 44, 30, 39, 30, 52, 32, 54, 35, 52, 42, 65, 38, 65, 48, 64, 49, 80, 48, 85, 56, 77, 64, 90, 58, 102, 72, 93, 69, 114, 72, 120, 81]

cp's OEIS Frontend

A051493 Triangles with perimeter n and relatively prime integer side lengths.

Table of values

List of values

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	2
10	1
11	4
12	2
13	5
14	2
15	5
16	4
17	8
18	4
19	10
20	6
21	9
22	6
23	14
24	8
25	15
26	9
27	16
28	12
29	21
30	11
31	24
32	16
33	22
34	16
35	27
36	18
37	33
38	20
39	31
40	24
41	40
42	23
43	44
44	30
45	39
46	30
47	52
48	32
49	54
50	35
51	52
52	42
53	65
54	38
55	65
56	48
57	64
58	49
59	80
60	48
61	85
62	56
63	77
64	64
65	90
66	58
67	102
68	72
69	93
70	69
71	114
72	72
73	120
74	81

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	2
10	1
11	4
12	2
13	5
14	2
15	5
16	4
17	8
18	4
19	10
20	6
21	9
22	6
23	14
24	8
25	15
26	9
27	16
28	12
29	21
30	11
31	24
32	16
33	22
34	16
35	27
36	18
37	33
38	20
39	31
40	24
41	40
42	23
43	44
44	30
45	39
46	30
47	52
48	32
49	54
50	35
51	52
52	42
53	65
54	38
55	65
56	48
57	64
58	49
59	80
60	48
61	85
62	56
63	77
64	64
65	90
66	58
67	102
68	72
69	93
70	69
71	114
72	72
73	120
74	81

n	a(n)
1	0
2	0
3	1
4	0
5	1
6	0
7	2
8	1
9	2
10	1
11	4
12	2
13	5
14	2
15	5
16	4
17	8
18	4
19	10
20	6
21	9
22	6
23	14
24	8
25	15
26	9
27	16
28	12
29	21
30	11
31	24
32	16
33	22
34	16
35	27
36	18
37	33
38	20
39	31
40	24
41	40
42	23
43	44
44	30
45	39
46	30
47	52
48	32
49	54
50	35
51	52
52	42
53	65
54	38
55	65
56	48
57	64
58	49
59	80
60	48
61	85
62	56
63	77
64	64
65	90
66	58
67	102
68	72
69	93
70	69
71	114
72	72
73	120
74	81