A320311 - cp's OEIS frontend

A320311 Number of ways to write n as the sum of 4 positive integers a, b, c, d such that 1 - a/c = (1 - b/d)^2.

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

[0, 0, 0, 1, 0, 2, 0, 3, 0, 5, 0, 6, 1, 6, 0, 8, 2, 9, 2, 10, 0, 15, 1, 14, 1, 15, 3, 15, 2, 17, 4, 19, 3, 21, 1, 21, 4, 26, 3, 25, 4, 24, 4, 27, 6, 29, 5, 31, 5, 30, 4, 36, 4, 37, 6, 34, 6, 41, 8, 36, 8, 43, 4, 42, 5, 44, 10, 44, 9, 45, 9, 45, 10, 48]

cp's OEIS Frontend

A320311 Number of ways to write n as the sum of 4 positive integers a, b, c, d such that 1 - a/c = (1 - b/d)^2.

Table of values

List of values

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

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

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