A335621 - cp's OEIS frontend

A335621 Number of integer-sided triangles with perimeter n such that the sum of each pair of side lengths is squarefree.

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

[0, 0, 1, 0, 0, 0, 0, 1, 2, 1, 1, 1, 0, 0, 1, 1, 2, 3, 4, 2, 3, 2, 2, 4, 5, 4, 4, 3, 3, 3, 3, 5, 5, 4, 4, 6, 8, 5, 8, 8, 12, 7, 12, 7, 10, 6, 10, 10, 15, 14, 20, 14, 18, 17, 21, 20, 25, 20, 23, 18, 19, 16, 20, 22, 24, 21, 25, 21, 22, 20, 22, 23, 28, 22, 28, 22, 24, 20, 23, 25]

cp's OEIS Frontend

A335621 Number of integer-sided triangles with perimeter n such that the sum of each pair of side lengths is squarefree.

Table of values

List of values

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

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

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