A278638 - cp's OEIS frontend

A278638 Numbers n such that 1/n is a difference of Egyptian fractions with all denominators < n.

n	a(n)
1	6
2	12
3	15
4	18
5	20
6	21
7	24
8	28
9	30
10	33
11	35
12	36
13	40
14	42
15	44
16	45
17	48
18	52
19	54
20	55
21	56
22	60
23	63
24	65
25	66
26	68
27	70
28	72
29	75
30	76
31	77
32	78
33	80
34	84
35	85
36	88
37	90
38	91
39	95
40	96
41	99
42	100
43	102
44	104
45	105
46	108
47	110
48	112
49	114
50	115
51	117
52	119
53	120
54	126
55	130
56	132
57	133
58	135
59	136
60	138
61	140
62	143
63	144
64	145
65	147
66	150
67	152
68	153

[6, 12, 15, 18, 20, 21, 24, 28, 30, 33, 35, 36, 40, 42, 44, 45, 48, 52, 54, 55, 56, 60, 63, 65, 66, 68, 70, 72, 75, 76, 77, 78, 80, 84, 85, 88, 90, 91, 95, 96, 99, 100, 102, 104, 105, 108, 110, 112, 114, 115, 117, 119, 120, 126, 130, 132, 133, 135, 136, 138, 140, 143, 144, 145, 147, 150, 152, 153]

cp's OEIS Frontend

A278638 Numbers n such that 1/n is a difference of Egyptian fractions with all denominators < n.

Table of values

List of values

n	a(n)
1	6
2	12
3	15
4	18
5	20
6	21
7	24
8	28
9	30
10	33
11	35
12	36
13	40
14	42
15	44
16	45
17	48
18	52
19	54
20	55
21	56
22	60
23	63
24	65
25	66
26	68
27	70
28	72
29	75
30	76
31	77
32	78
33	80
34	84
35	85
36	88
37	90
38	91
39	95
40	96
41	99
42	100
43	102
44	104
45	105
46	108
47	110
48	112
49	114
50	115
51	117
52	119
53	120
54	126
55	130
56	132
57	133
58	135
59	136
60	138
61	140
62	143
63	144
64	145
65	147
66	150
67	152
68	153

n	a(n)
1	6
2	12
3	15
4	18
5	20
6	21
7	24
8	28
9	30
10	33
11	35
12	36
13	40
14	42
15	44
16	45
17	48
18	52
19	54
20	55
21	56
22	60
23	63
24	65
25	66
26	68
27	70
28	72
29	75
30	76
31	77
32	78
33	80
34	84
35	85
36	88
37	90
38	91
39	95
40	96
41	99
42	100
43	102
44	104
45	105
46	108
47	110
48	112
49	114
50	115
51	117
52	119
53	120
54	126
55	130
56	132
57	133
58	135
59	136
60	138
61	140
62	143
63	144
64	145
65	147
66	150
67	152
68	153

n	a(n)
1	6
2	12
3	15
4	18
5	20
6	21
7	24
8	28
9	30
10	33
11	35
12	36
13	40
14	42
15	44
16	45
17	48
18	52
19	54
20	55
21	56
22	60
23	63
24	65
25	66
26	68
27	70
28	72
29	75
30	76
31	77
32	78
33	80
34	84
35	85
36	88
37	90
38	91
39	95
40	96
41	99
42	100
43	102
44	104
45	105
46	108
47	110
48	112
49	114
50	115
51	117
52	119
53	120
54	126
55	130
56	132
57	133
58	135
59	136
60	138
61	140
62	143
63	144
64	145
65	147
66	150
67	152
68	153