A227611 - cp's OEIS frontend

A227611 Number of ways 2/n can be expressed as the sum of three distinct unit fractions: 2/n = 1/x + 1/y + 1/z with 0 < x < y < z.

n	a(n)
1	0
2	1
3	5
4	6
5	9
6	15
7	14
8	22
9	21
10	30
11	22
12	45
13	17
14	36
15	72
16	62
17	22
18	69
19	29
20	84
21	77
22	56
23	39
24	142
25	48
26	53
27	82
28	124
29	30
30	178
31	34
32	118
33	94
34	67
35	176
36	191
37	29
38	74
39	151
40	274
41	37
42	227
43	37
44	145
45	220
46	87
47	57
48	342
49	80
50	146
51	138
52	162
53	39
54	216
55	214
56	322
57	134
58	100
59	73
60	461
61	31
62	84
63	316
64	257
65	197
66	304
67	47
68	199
69	166
70	435
71	69
72	508
73	34
74	79
75	317

[0, 1, 5, 6, 9, 15, 14, 22, 21, 30, 22, 45, 17, 36, 72, 62, 22, 69, 29, 84, 77, 56, 39, 142, 48, 53, 82, 124, 30, 178, 34, 118, 94, 67, 176, 191, 29, 74, 151, 274, 37, 227, 37, 145, 220, 87, 57, 342, 80, 146, 138, 162, 39, 216, 214, 322, 134, 100, 73, 461, 31, 84, 316, 257, 197, 304, 47, 199, 166, 435, 69, 508, 34, 79, 317]

cp's OEIS Frontend

A227611 Number of ways 2/n can be expressed as the sum of three distinct unit fractions: 2/n = 1/x + 1/y + 1/z with 0 < x < y < z.

Table of values

List of values

n	a(n)
1	0
2	1
3	5
4	6
5	9
6	15
7	14
8	22
9	21
10	30
11	22
12	45
13	17
14	36
15	72
16	62
17	22
18	69
19	29
20	84
21	77
22	56
23	39
24	142
25	48
26	53
27	82
28	124
29	30
30	178
31	34
32	118
33	94
34	67
35	176
36	191
37	29
38	74
39	151
40	274
41	37
42	227
43	37
44	145
45	220
46	87
47	57
48	342
49	80
50	146
51	138
52	162
53	39
54	216
55	214
56	322
57	134
58	100
59	73
60	461
61	31
62	84
63	316
64	257
65	197
66	304
67	47
68	199
69	166
70	435
71	69
72	508
73	34
74	79
75	317

n	a(n)
1	0
2	1
3	5
4	6
5	9
6	15
7	14
8	22
9	21
10	30
11	22
12	45
13	17
14	36
15	72
16	62
17	22
18	69
19	29
20	84
21	77
22	56
23	39
24	142
25	48
26	53
27	82
28	124
29	30
30	178
31	34
32	118
33	94
34	67
35	176
36	191
37	29
38	74
39	151
40	274
41	37
42	227
43	37
44	145
45	220
46	87
47	57
48	342
49	80
50	146
51	138
52	162
53	39
54	216
55	214
56	322
57	134
58	100
59	73
60	461
61	31
62	84
63	316
64	257
65	197
66	304
67	47
68	199
69	166
70	435
71	69
72	508
73	34
74	79
75	317

n	a(n)
1	0
2	1
3	5
4	6
5	9
6	15
7	14
8	22
9	21
10	30
11	22
12	45
13	17
14	36
15	72
16	62
17	22
18	69
19	29
20	84
21	77
22	56
23	39
24	142
25	48
26	53
27	82
28	124
29	30
30	178
31	34
32	118
33	94
34	67
35	176
36	191
37	29
38	74
39	151
40	274
41	37
42	227
43	37
44	145
45	220
46	87
47	57
48	342
49	80
50	146
51	138
52	162
53	39
54	216
55	214
56	322
57	134
58	100
59	73
60	461
61	31
62	84
63	316
64	257
65	197
66	304
67	47
68	199
69	166
70	435
71	69
72	508
73	34
74	79
75	317