A051278 - cp's OEIS frontend

A051278 Numbers n such that n = k/d(k) has a unique solution, where d(k) = number of divisors of k.

n	a(n)
1	4
2	6
3	9
4	10
5	12
6	14
7	15
8	20
9	21
10	22
11	26
12	32
13	33
14	34
15	35
16	36
17	38
18	39
19	42
20	46
21	50
22	51
23	55
24	57
25	58
26	60
27	62
28	65
29	66
30	69
31	70
32	74
33	75
34	77
35	78
36	82
37	85
38	86
39	87
40	90
41	91
42	93
43	94
44	95
45	96
46	98
47	100
48	102
49	106
50	108
51	110
52	111
53	114
54	115
55	118
56	119
57	122
58	123
59	126
60	128
61	129
62	130

[4, 6, 9, 10, 12, 14, 15, 20, 21, 22, 26, 32, 33, 34, 35, 36, 38, 39, 42, 46, 50, 51, 55, 57, 58, 60, 62, 65, 66, 69, 70, 74, 75, 77, 78, 82, 85, 86, 87, 90, 91, 93, 94, 95, 96, 98, 100, 102, 106, 108, 110, 111, 114, 115, 118, 119, 122, 123, 126, 128, 129, 130]

cp's OEIS Frontend

A051278 Numbers n such that n = k/d(k) has a unique solution, where d(k) = number of divisors of k.

Table of values

List of values

n	a(n)
1	4
2	6
3	9
4	10
5	12
6	14
7	15
8	20
9	21
10	22
11	26
12	32
13	33
14	34
15	35
16	36
17	38
18	39
19	42
20	46
21	50
22	51
23	55
24	57
25	58
26	60
27	62
28	65
29	66
30	69
31	70
32	74
33	75
34	77
35	78
36	82
37	85
38	86
39	87
40	90
41	91
42	93
43	94
44	95
45	96
46	98
47	100
48	102
49	106
50	108
51	110
52	111
53	114
54	115
55	118
56	119
57	122
58	123
59	126
60	128
61	129
62	130

n	a(n)
1	4
2	6
3	9
4	10
5	12
6	14
7	15
8	20
9	21
10	22
11	26
12	32
13	33
14	34
15	35
16	36
17	38
18	39
19	42
20	46
21	50
22	51
23	55
24	57
25	58
26	60
27	62
28	65
29	66
30	69
31	70
32	74
33	75
34	77
35	78
36	82
37	85
38	86
39	87
40	90
41	91
42	93
43	94
44	95
45	96
46	98
47	100
48	102
49	106
50	108
51	110
52	111
53	114
54	115
55	118
56	119
57	122
58	123
59	126
60	128
61	129
62	130

n	a(n)
1	4
2	6
3	9
4	10
5	12
6	14
7	15
8	20
9	21
10	22
11	26
12	32
13	33
14	34
15	35
16	36
17	38
18	39
19	42
20	46
21	50
22	51
23	55
24	57
25	58
26	60
27	62
28	65
29	66
30	69
31	70
32	74
33	75
34	77
35	78
36	82
37	85
38	86
39	87
40	90
41	91
42	93
43	94
44	95
45	96
46	98
47	100
48	102
49	106
50	108
51	110
52	111
53	114
54	115
55	118
56	119
57	122
58	123
59	126
60	128
61	129
62	130