A308221 - cp's OEIS frontend

A308221 Number of Egyptian fractions of denominator n which are sum of 3 unit fractions.

n	a(n)
1	3
2	6
3	8
4	11
5	11
6	16
7	13
8	19
9	19
10	22
11	16
12	29
13	18
14	26
15	29
16	31
17	21
18	38
19	22
20	41
21	37
22	32
23	25
24	51
25	33
26	36
27	41
28	49
29	27
30	58
31	28
32	51
33	44
34	42
35	49
36	69
37	28
38	45
39	51
40	71
41	31
42	74
43	32
44	61
45	69
46	48
47	36
48	87
49	48
50	67
51	58
52	68
53	36
54	82
55	66
56	85
57	62
58	54
59	41
60	109
61	33
62	57
63	86
64	82
65	69
66	89
67	40
68	80
69	71
70	98
71	44
72	121
73	38
74	59
75	91
76	84
77	77
78	101
79	46
80	118
81	81
82	62
83	52
84	139
85	79
86	65
87	79
88	106
89	49
90	138
91	80
92	89
93	77
94	70
95	83
96	143
97	47
98	98
99	107
100	128

[3, 6, 8, 11, 11, 16, 13, 19, 19, 22, 16, 29, 18, 26, 29, 31, 21, 38, 22, 41, 37, 32, 25, 51, 33, 36, 41, 49, 27, 58, 28, 51, 44, 42, 49, 69, 28, 45, 51, 71, 31, 74, 32, 61, 69, 48, 36, 87, 48, 67, 58, 68, 36, 82, 66, 85, 62, 54, 41, 109, 33, 57, 86, 82, 69, 89, 40, 80, 71, 98, 44, 121, 38, 59, 91, 84, 77, 101, 46, 118, 81, 62, 52, 139, 79, 65, 79, 106, 49, 138, 80, 89, 77, 70, 83, 143, 47, 98, 107, 128]

cp's OEIS Frontend

A308221 Number of Egyptian fractions of denominator n which are sum of 3 unit fractions.

Table of values

List of values

n	a(n)
1	3
2	6
3	8
4	11
5	11
6	16
7	13
8	19
9	19
10	22
11	16
12	29
13	18
14	26
15	29
16	31
17	21
18	38
19	22
20	41
21	37
22	32
23	25
24	51
25	33
26	36
27	41
28	49
29	27
30	58
31	28
32	51
33	44
34	42
35	49
36	69
37	28
38	45
39	51
40	71
41	31
42	74
43	32
44	61
45	69
46	48
47	36
48	87
49	48
50	67
51	58
52	68
53	36
54	82
55	66
56	85
57	62
58	54
59	41
60	109
61	33
62	57
63	86
64	82
65	69
66	89
67	40
68	80
69	71
70	98
71	44
72	121
73	38
74	59
75	91
76	84
77	77
78	101
79	46
80	118
81	81
82	62
83	52
84	139
85	79
86	65
87	79
88	106
89	49
90	138
91	80
92	89
93	77
94	70
95	83
96	143
97	47
98	98
99	107
100	128

n	a(n)
1	3
2	6
3	8
4	11
5	11
6	16
7	13
8	19
9	19
10	22
11	16
12	29
13	18
14	26
15	29
16	31
17	21
18	38
19	22
20	41
21	37
22	32
23	25
24	51
25	33
26	36
27	41
28	49
29	27
30	58
31	28
32	51
33	44
34	42
35	49
36	69
37	28
38	45
39	51
40	71
41	31
42	74
43	32
44	61
45	69
46	48
47	36
48	87
49	48
50	67
51	58
52	68
53	36
54	82
55	66
56	85
57	62
58	54
59	41
60	109
61	33
62	57
63	86
64	82
65	69
66	89
67	40
68	80
69	71
70	98
71	44
72	121
73	38
74	59
75	91
76	84
77	77
78	101
79	46
80	118
81	81
82	62
83	52
84	139
85	79
86	65
87	79
88	106
89	49
90	138
91	80
92	89
93	77
94	70
95	83
96	143
97	47
98	98
99	107
100	128

n	a(n)
1	3
2	6
3	8
4	11
5	11
6	16
7	13
8	19
9	19
10	22
11	16
12	29
13	18
14	26
15	29
16	31
17	21
18	38
19	22
20	41
21	37
22	32
23	25
24	51
25	33
26	36
27	41
28	49
29	27
30	58
31	28
32	51
33	44
34	42
35	49
36	69
37	28
38	45
39	51
40	71
41	31
42	74
43	32
44	61
45	69
46	48
47	36
48	87
49	48
50	67
51	58
52	68
53	36
54	82
55	66
56	85
57	62
58	54
59	41
60	109
61	33
62	57
63	86
64	82
65	69
66	89
67	40
68	80
69	71
70	98
71	44
72	121
73	38
74	59
75	91
76	84
77	77
78	101
79	46
80	118
81	81
82	62
83	52
84	139
85	79
86	65
87	79
88	106
89	49
90	138
91	80
92	89
93	77
94	70
95	83
96	143
97	47
98	98
99	107
100	128