A334815 - cp's OEIS frontend

A334815 Unitary arithmetic numbers k (A103826) such that usigma(k)/ud(k) is also a unitary arithmetic number, where ud(k) is the number of divisors of k (A034444) and usigma(k) is their sum (A034448).

n	a(n)
1	1
2	5
3	6
4	9
5	11
6	12
7	13
8	14
9	15
10	17
11	22
12	23
13	24
14	25
15	27
16	29
17	30
18	33
19	35
20	37
21	38
22	39
23	41
24	42
25	43
26	44
27	45
28	47
29	48
30	49
31	53
32	54
33	59
34	60
35	61
36	62
37	65
38	69
39	73
40	76
41	77
42	78
43	81
44	83
45	85
46	86
47	87
48	88
49	89
50	91
51	92
52	95
53	96
54	97
55	99
56	101
57	102
58	105
59	107
60	108
61	109
62	110
63	111
64	113

[1, 5, 6, 9, 11, 12, 13, 14, 15, 17, 22, 23, 24, 25, 27, 29, 30, 33, 35, 37, 38, 39, 41, 42, 43, 44, 45, 47, 48, 49, 53, 54, 59, 60, 61, 62, 65, 69, 73, 76, 77, 78, 81, 83, 85, 86, 87, 88, 89, 91, 92, 95, 96, 97, 99, 101, 102, 105, 107, 108, 109, 110, 111, 113]

cp's OEIS Frontend

A334815 Unitary arithmetic numbers k (A103826) such that usigma(k)/ud(k) is also a unitary arithmetic number, where ud(k) is the number of divisors of k (A034444) and usigma(k) is their sum (A034448).

Table of values

List of values

n	a(n)
1	1
2	5
3	6
4	9
5	11
6	12
7	13
8	14
9	15
10	17
11	22
12	23
13	24
14	25
15	27
16	29
17	30
18	33
19	35
20	37
21	38
22	39
23	41
24	42
25	43
26	44
27	45
28	47
29	48
30	49
31	53
32	54
33	59
34	60
35	61
36	62
37	65
38	69
39	73
40	76
41	77
42	78
43	81
44	83
45	85
46	86
47	87
48	88
49	89
50	91
51	92
52	95
53	96
54	97
55	99
56	101
57	102
58	105
59	107
60	108
61	109
62	110
63	111
64	113

n	a(n)
1	1
2	5
3	6
4	9
5	11
6	12
7	13
8	14
9	15
10	17
11	22
12	23
13	24
14	25
15	27
16	29
17	30
18	33
19	35
20	37
21	38
22	39
23	41
24	42
25	43
26	44
27	45
28	47
29	48
30	49
31	53
32	54
33	59
34	60
35	61
36	62
37	65
38	69
39	73
40	76
41	77
42	78
43	81
44	83
45	85
46	86
47	87
48	88
49	89
50	91
51	92
52	95
53	96
54	97
55	99
56	101
57	102
58	105
59	107
60	108
61	109
62	110
63	111
64	113

n	a(n)
1	1
2	5
3	6
4	9
5	11
6	12
7	13
8	14
9	15
10	17
11	22
12	23
13	24
14	25
15	27
16	29
17	30
18	33
19	35
20	37
21	38
22	39
23	41
24	42
25	43
26	44
27	45
28	47
29	48
30	49
31	53
32	54
33	59
34	60
35	61
36	62
37	65
38	69
39	73
40	76
41	77
42	78
43	81
44	83
45	85
46	86
47	87
48	88
49	89
50	91
51	92
52	95
53	96
54	97
55	99
56	101
57	102
58	105
59	107
60	108
61	109
62	110
63	111
64	113