A385736 - cp's OEIS frontend

A385736 a(n) is the number of distinct nondegenerate triangles with perimeter n whose side lengths are triangular numbers.

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

[0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 0, 1, 0, 0, 0, 1, 2, 0, 1, 0, 1, 1, 0, 0, 0, 1, 0, 0, 1, 0, 2, 1, 0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 2, 1, 2, 0, 0, 1, 1, 1, 0, 1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 2, 1, 0, 0, 1, 0, 1, 1, 0, 1]

cp's OEIS Frontend

A385736 a(n) is the number of distinct nondegenerate triangles with perimeter n whose side lengths are triangular numbers.

Table of values

List of values

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

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

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