A104529 - cp's OEIS frontend

A104529 Denominator of Sum_{k=1..n} 1/tau(k), where tau(k) is the number of divisors function.

n	a(n)
1	1
2	2
3	1
4	3
5	6
6	12
7	12
8	6
9	6
10	12
11	12
12	12
13	12
14	6
15	12
16	60
17	60
18	20
19	20
20	60
21	15
22	60
23	60
24	120
25	40
26	40
27	40
28	120
29	120
30	30
31	15
32	30
33	60
34	15
35	60
36	180
37	180
38	45
39	180
40	360
41	360
42	45
43	90
44	45
45	90
46	180
47	180
48	180
49	180
50	180
51	90
52	45
53	90
54	360
55	360
56	45
57	180
58	90
59	45
60	180
61	180
62	90
63	45
64	315
65	1260

[1, 2, 1, 3, 6, 12, 12, 6, 6, 12, 12, 12, 12, 6, 12, 60, 60, 20, 20, 60, 15, 60, 60, 120, 40, 40, 40, 120, 120, 30, 15, 30, 60, 15, 60, 180, 180, 45, 180, 360, 360, 45, 90, 45, 90, 180, 180, 180, 180, 180, 90, 45, 90, 360, 360, 45, 180, 90, 45, 180, 180, 90, 45, 315, 1260]

cp's OEIS Frontend

A104529 Denominator of Sum_{k=1..n} 1/tau(k), where tau(k) is the number of divisors function.

Table of values

List of values