A124287 - cp's OEIS frontend

A124287 Triangle of the number of integer-sided k-gons having perimeter n, for k=3..n.

n	a(n)
3	1
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	1
12	1
13	2
14	3
15	3
16	1
17	1
18	1
19	5
20	4
21	4
22	1
23	1
24	3
25	7
26	9
27	7
28	4
29	1
30	1
31	2
32	9
33	13
34	15
35	8
36	5
37	1
38	1
39	4
40	13
41	23
42	25
43	20
44	10
45	5
46	1
47	1
48	3
49	16
50	29
51	46
52	37
53	29
54	12
55	6
56	1
57	1
58	5
59	22
60	48
61	72
62	75
63	57
64	35
65	14
66	6
67	1
68	1
69	4
70	25
71	60
72	113
73	129
74	125
75	79
76	47
77	16
78	7
79	1
80	1
81	7
82	34
83	92
84	172
85	228
86	231
87	185

[1, 0, 1, 1, 1, 1, 1, 2, 1, 1, 2, 3, 3, 1, 1, 1, 5, 4, 4, 1, 1, 3, 7, 9, 7, 4, 1, 1, 2, 9, 13, 15, 8, 5, 1, 1, 4, 13, 23, 25, 20, 10, 5, 1, 1, 3, 16, 29, 46, 37, 29, 12, 6, 1, 1, 5, 22, 48, 72, 75, 57, 35, 14, 6, 1, 1, 4, 25, 60, 113, 129, 125, 79, 47, 16, 7, 1, 1, 7, 34, 92, 172, 228, 231, 185]

cp's OEIS Frontend

A124287 Triangle of the number of integer-sided k-gons having perimeter n, for k=3..n.

Table of values

List of values

n	a(n)
3	1
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	1
12	1
13	2
14	3
15	3
16	1
17	1
18	1
19	5
20	4
21	4
22	1
23	1
24	3
25	7
26	9
27	7
28	4
29	1
30	1
31	2
32	9
33	13
34	15
35	8
36	5
37	1
38	1
39	4
40	13
41	23
42	25
43	20
44	10
45	5
46	1
47	1
48	3
49	16
50	29
51	46
52	37
53	29
54	12
55	6
56	1
57	1
58	5
59	22
60	48
61	72
62	75
63	57
64	35
65	14
66	6
67	1
68	1
69	4
70	25
71	60
72	113
73	129
74	125
75	79
76	47
77	16
78	7
79	1
80	1
81	7
82	34
83	92
84	172
85	228
86	231
87	185

n	a(n)
3	1
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	1
12	1
13	2
14	3
15	3
16	1
17	1
18	1
19	5
20	4
21	4
22	1
23	1
24	3
25	7
26	9
27	7
28	4
29	1
30	1
31	2
32	9
33	13
34	15
35	8
36	5
37	1
38	1
39	4
40	13
41	23
42	25
43	20
44	10
45	5
46	1
47	1
48	3
49	16
50	29
51	46
52	37
53	29
54	12
55	6
56	1
57	1
58	5
59	22
60	48
61	72
62	75
63	57
64	35
65	14
66	6
67	1
68	1
69	4
70	25
71	60
72	113
73	129
74	125
75	79
76	47
77	16
78	7
79	1
80	1
81	7
82	34
83	92
84	172
85	228
86	231
87	185

n	a(n)
3	1
4	0
5	1
6	1
7	1
8	1
9	1
10	2
11	1
12	1
13	2
14	3
15	3
16	1
17	1
18	1
19	5
20	4
21	4
22	1
23	1
24	3
25	7
26	9
27	7
28	4
29	1
30	1
31	2
32	9
33	13
34	15
35	8
36	5
37	1
38	1
39	4
40	13
41	23
42	25
43	20
44	10
45	5
46	1
47	1
48	3
49	16
50	29
51	46
52	37
53	29
54	12
55	6
56	1
57	1
58	5
59	22
60	48
61	72
62	75
63	57
64	35
65	14
66	6
67	1
68	1
69	4
70	25
71	60
72	113
73	129
74	125
75	79
76	47
77	16
78	7
79	1
80	1
81	7
82	34
83	92
84	172
85	228
86	231
87	185