A371973 - cp's OEIS frontend

A371973 a(n) is the number of distinct areas > 0 of triangles with integer sides and perimeter n.

n	a(n)
3	1
4	0
5	1
6	1
7	2
8	1
9	3
10	2
11	4
12	3
13	5
14	4
15	7
16	5
17	8
18	7
19	10
20	8
21	12
22	10
23	14
24	12
25	16
26	13
27	19
28	14
29	21
30	19
31	23
32	20
33	27
34	23
35	30
36	27
37	32
38	29
39	35
40	32
41	39
42	34
43	44
44	39
45	48
46	43
47	52
48	47
49	55
50	51
51	60
52	53
53	63
54	59
55	69
56	58
57	74
58	67
59	78
60	73
61	84
62	75
63	90
64	81
65	92
66	88
67	101
68	91
69	108
70	93
71	112
72	106

[1, 0, 1, 1, 2, 1, 3, 2, 4, 3, 5, 4, 7, 5, 8, 7, 10, 8, 12, 10, 14, 12, 16, 13, 19, 14, 21, 19, 23, 20, 27, 23, 30, 27, 32, 29, 35, 32, 39, 34, 44, 39, 48, 43, 52, 47, 55, 51, 60, 53, 63, 59, 69, 58, 74, 67, 78, 73, 84, 75, 90, 81, 92, 88, 101, 91, 108, 93, 112, 106]

cp's OEIS Frontend

A371973 a(n) is the number of distinct areas > 0 of triangles with integer sides and perimeter n.

Table of values

List of values

n	a(n)
3	1
4	0
5	1
6	1
7	2
8	1
9	3
10	2
11	4
12	3
13	5
14	4
15	7
16	5
17	8
18	7
19	10
20	8
21	12
22	10
23	14
24	12
25	16
26	13
27	19
28	14
29	21
30	19
31	23
32	20
33	27
34	23
35	30
36	27
37	32
38	29
39	35
40	32
41	39
42	34
43	44
44	39
45	48
46	43
47	52
48	47
49	55
50	51
51	60
52	53
53	63
54	59
55	69
56	58
57	74
58	67
59	78
60	73
61	84
62	75
63	90
64	81
65	92
66	88
67	101
68	91
69	108
70	93
71	112
72	106

n	a(n)
3	1
4	0
5	1
6	1
7	2
8	1
9	3
10	2
11	4
12	3
13	5
14	4
15	7
16	5
17	8
18	7
19	10
20	8
21	12
22	10
23	14
24	12
25	16
26	13
27	19
28	14
29	21
30	19
31	23
32	20
33	27
34	23
35	30
36	27
37	32
38	29
39	35
40	32
41	39
42	34
43	44
44	39
45	48
46	43
47	52
48	47
49	55
50	51
51	60
52	53
53	63
54	59
55	69
56	58
57	74
58	67
59	78
60	73
61	84
62	75
63	90
64	81
65	92
66	88
67	101
68	91
69	108
70	93
71	112
72	106

n	a(n)
3	1
4	0
5	1
6	1
7	2
8	1
9	3
10	2
11	4
12	3
13	5
14	4
15	7
16	5
17	8
18	7
19	10
20	8
21	12
22	10
23	14
24	12
25	16
26	13
27	19
28	14
29	21
30	19
31	23
32	20
33	27
34	23
35	30
36	27
37	32
38	29
39	35
40	32
41	39
42	34
43	44
44	39
45	48
46	43
47	52
48	47
49	55
50	51
51	60
52	53
53	63
54	59
55	69
56	58
57	74
58	67
59	78
60	73
61	84
62	75
63	90
64	81
65	92
66	88
67	101
68	91
69	108
70	93
71	112
72	106