A306012 - cp's OEIS frontend

A306012 Let S(m) = d(k)/d(1) + ... + d(1)/d(k), where d(1)..d(k) are the unitary divisors of m; then a(n) is the denominator of S(m) when all the numbers S(m) are arranged in increasing order.

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	3
9	9
10	11
11	1
12	13
13	6
14	16
15	17
16	3
17	7
18	19
19	10
20	9
21	23
22	21
23	25
24	27
25	12
26	11
27	29
28	14
29	31
30	32
31	13
32	33
33	37
34	7
35	18
36	41
37	4
38	17
39	43
40	3
41	39
42	47
43	22
44	45
45	19
46	49
47	53
48	24
49	26
50	51
51	23
52	55
53	28
54	59
55	21
56	61
57	5
58	57
59	64
60	63
61	67
62	27
63	1
64	71
65	2
66	29
67	73
68	3
69	36
70	69

[1, 2, 3, 4, 5, 7, 8, 3, 9, 11, 1, 13, 6, 16, 17, 3, 7, 19, 10, 9, 23, 21, 25, 27, 12, 11, 29, 14, 31, 32, 13, 33, 37, 7, 18, 41, 4, 17, 43, 3, 39, 47, 22, 45, 19, 49, 53, 24, 26, 51, 23, 55, 28, 59, 21, 61, 5, 57, 64, 63, 67, 27, 1, 71, 2, 29, 73, 3, 36, 69]

cp's OEIS Frontend

A306012 Let S(m) = d(k)/d(1) + ... + d(1)/d(k), where d(1)..d(k) are the unitary divisors of m; then a(n) is the denominator of S(m) when all the numbers S(m) are arranged in increasing order.

Table of values

List of values

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	3
9	9
10	11
11	1
12	13
13	6
14	16
15	17
16	3
17	7
18	19
19	10
20	9
21	23
22	21
23	25
24	27
25	12
26	11
27	29
28	14
29	31
30	32
31	13
32	33
33	37
34	7
35	18
36	41
37	4
38	17
39	43
40	3
41	39
42	47
43	22
44	45
45	19
46	49
47	53
48	24
49	26
50	51
51	23
52	55
53	28
54	59
55	21
56	61
57	5
58	57
59	64
60	63
61	67
62	27
63	1
64	71
65	2
66	29
67	73
68	3
69	36
70	69

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	3
9	9
10	11
11	1
12	13
13	6
14	16
15	17
16	3
17	7
18	19
19	10
20	9
21	23
22	21
23	25
24	27
25	12
26	11
27	29
28	14
29	31
30	32
31	13
32	33
33	37
34	7
35	18
36	41
37	4
38	17
39	43
40	3
41	39
42	47
43	22
44	45
45	19
46	49
47	53
48	24
49	26
50	51
51	23
52	55
53	28
54	59
55	21
56	61
57	5
58	57
59	64
60	63
61	67
62	27
63	1
64	71
65	2
66	29
67	73
68	3
69	36
70	69

n	a(n)
1	1
2	2
3	3
4	4
5	5
6	7
7	8
8	3
9	9
10	11
11	1
12	13
13	6
14	16
15	17
16	3
17	7
18	19
19	10
20	9
21	23
22	21
23	25
24	27
25	12
26	11
27	29
28	14
29	31
30	32
31	13
32	33
33	37
34	7
35	18
36	41
37	4
38	17
39	43
40	3
41	39
42	47
43	22
44	45
45	19
46	49
47	53
48	24
49	26
50	51
51	23
52	55
53	28
54	59
55	21
56	61
57	5
58	57
59	64
60	63
61	67
62	27
63	1
64	71
65	2
66	29
67	73
68	3
69	36
70	69