A337605 - cp's OEIS frontend

A337605 Number of unordered triples of distinct positive integers summing to n, any two of which have a common divisor > 1.

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	1
15	0
16	2
17	0
18	4
19	0
20	4
21	1
22	5
23	0
24	9
25	0
26	8
27	3
28	10
29	0
30	17
31	1
32	14
33	5
34	16
35	1
36	25
37	1
38	21
39	8
40	26
41	2
42	37
43	1
44	30
45	15
46	33
47	2
48	49
49	2
50	44
51	16
52	44
53	2
54	64
55	6
56	54
57	21
58	56
59	3
60	87
61	5
62	65
63	30
64	70
65	9
66	101
67	5
68	80
69	34
70	98
71	6
72	121
73	6
74	96
75	52

[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0, 2, 0, 4, 0, 4, 1, 5, 0, 9, 0, 8, 3, 10, 0, 17, 1, 14, 5, 16, 1, 25, 1, 21, 8, 26, 2, 37, 1, 30, 15, 33, 2, 49, 2, 44, 16, 44, 2, 64, 6, 54, 21, 56, 3, 87, 5, 65, 30, 70, 9, 101, 5, 80, 34, 98, 6, 121, 6, 96, 52]

cp's OEIS Frontend

A337605 Number of unordered triples of distinct positive integers summing to n, any two of which have a common divisor > 1.

Table of values

List of values

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	1
15	0
16	2
17	0
18	4
19	0
20	4
21	1
22	5
23	0
24	9
25	0
26	8
27	3
28	10
29	0
30	17
31	1
32	14
33	5
34	16
35	1
36	25
37	1
38	21
39	8
40	26
41	2
42	37
43	1
44	30
45	15
46	33
47	2
48	49
49	2
50	44
51	16
52	44
53	2
54	64
55	6
56	54
57	21
58	56
59	3
60	87
61	5
62	65
63	30
64	70
65	9
66	101
67	5
68	80
69	34
70	98
71	6
72	121
73	6
74	96
75	52

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	1
15	0
16	2
17	0
18	4
19	0
20	4
21	1
22	5
23	0
24	9
25	0
26	8
27	3
28	10
29	0
30	17
31	1
32	14
33	5
34	16
35	1
36	25
37	1
38	21
39	8
40	26
41	2
42	37
43	1
44	30
45	15
46	33
47	2
48	49
49	2
50	44
51	16
52	44
53	2
54	64
55	6
56	54
57	21
58	56
59	3
60	87
61	5
62	65
63	30
64	70
65	9
66	101
67	5
68	80
69	34
70	98
71	6
72	121
73	6
74	96
75	52

n	a(n)
0	0
1	0
2	0
3	0
4	0
5	0
6	0
7	0
8	0
9	0
10	0
11	0
12	1
13	0
14	1
15	0
16	2
17	0
18	4
19	0
20	4
21	1
22	5
23	0
24	9
25	0
26	8
27	3
28	10
29	0
30	17
31	1
32	14
33	5
34	16
35	1
36	25
37	1
38	21
39	8
40	26
41	2
42	37
43	1
44	30
45	15
46	33
47	2
48	49
49	2
50	44
51	16
52	44
53	2
54	64
55	6
56	54
57	21
58	56
59	3
60	87
61	5
62	65
63	30
64	70
65	9
66	101
67	5
68	80
69	34
70	98
71	6
72	121
73	6
74	96
75	52