A192787 - cp's OEIS frontend

A192787 Number of distinct solutions of 4/n = 1/a + 1/b + 1/c in positive integers satisfying 1 <= a <= b <= c.

n	a(n)
1	0
2	1
3	3
4	3
5	2
6	8
7	7
8	10
9	6
10	12
11	9
12	21
13	4
14	17
15	39
16	28
17	4
18	26
19	11
20	36
21	29
22	25
23	21
24	57
25	10
26	20
27	29
28	42
29	7
30	81
31	19
32	70
33	31
34	25
35	65
36	79
37	9
38	32
39	73
40	96
41	7
42	86
43	14
44	62
45	93
46	42
47	34
48	160
49	18
50	53
51	52
52	59
53	13
54	89
55	98
56	136
57	41
58	33
59	27
60	196
61	11
62	37
63	155
64	128
65	49
66	103
67	17
68	73
69	55
70	185
71	40
72	211
73	7
74	32
75	129
76	80
77	97
78	160
79	37
80	292

[0, 1, 3, 3, 2, 8, 7, 10, 6, 12, 9, 21, 4, 17, 39, 28, 4, 26, 11, 36, 29, 25, 21, 57, 10, 20, 29, 42, 7, 81, 19, 70, 31, 25, 65, 79, 9, 32, 73, 96, 7, 86, 14, 62, 93, 42, 34, 160, 18, 53, 52, 59, 13, 89, 98, 136, 41, 33, 27, 196, 11, 37, 155, 128, 49, 103, 17, 73, 55, 185, 40, 211, 7, 32, 129, 80, 97, 160, 37, 292]

cp's OEIS Frontend

A192787 Number of distinct solutions of 4/n = 1/a + 1/b + 1/c in positive integers satisfying 1 <= a <= b <= c.

Table of values

List of values

n	a(n)
1	0
2	1
3	3
4	3
5	2
6	8
7	7
8	10
9	6
10	12
11	9
12	21
13	4
14	17
15	39
16	28
17	4
18	26
19	11
20	36
21	29
22	25
23	21
24	57
25	10
26	20
27	29
28	42
29	7
30	81
31	19
32	70
33	31
34	25
35	65
36	79
37	9
38	32
39	73
40	96
41	7
42	86
43	14
44	62
45	93
46	42
47	34
48	160
49	18
50	53
51	52
52	59
53	13
54	89
55	98
56	136
57	41
58	33
59	27
60	196
61	11
62	37
63	155
64	128
65	49
66	103
67	17
68	73
69	55
70	185
71	40
72	211
73	7
74	32
75	129
76	80
77	97
78	160
79	37
80	292

n	a(n)
1	0
2	1
3	3
4	3
5	2
6	8
7	7
8	10
9	6
10	12
11	9
12	21
13	4
14	17
15	39
16	28
17	4
18	26
19	11
20	36
21	29
22	25
23	21
24	57
25	10
26	20
27	29
28	42
29	7
30	81
31	19
32	70
33	31
34	25
35	65
36	79
37	9
38	32
39	73
40	96
41	7
42	86
43	14
44	62
45	93
46	42
47	34
48	160
49	18
50	53
51	52
52	59
53	13
54	89
55	98
56	136
57	41
58	33
59	27
60	196
61	11
62	37
63	155
64	128
65	49
66	103
67	17
68	73
69	55
70	185
71	40
72	211
73	7
74	32
75	129
76	80
77	97
78	160
79	37
80	292

n	a(n)
1	0
2	1
3	3
4	3
5	2
6	8
7	7
8	10
9	6
10	12
11	9
12	21
13	4
14	17
15	39
16	28
17	4
18	26
19	11
20	36
21	29
22	25
23	21
24	57
25	10
26	20
27	29
28	42
29	7
30	81
31	19
32	70
33	31
34	25
35	65
36	79
37	9
38	32
39	73
40	96
41	7
42	86
43	14
44	62
45	93
46	42
47	34
48	160
49	18
50	53
51	52
52	59
53	13
54	89
55	98
56	136
57	41
58	33
59	27
60	196
61	11
62	37
63	155
64	128
65	49
66	103
67	17
68	73
69	55
70	185
71	40
72	211
73	7
74	32
75	129
76	80
77	97
78	160
79	37
80	292