A072983 - cp's OEIS frontend

A072983 Denominator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.

n	a(n)
1	1
2	2
3	6
4	6
5	30
6	5
7	35
8	35
9	35
10	70
11	770
12	770
13	10010
14	5005
15	15015
16	15015
17	255255
18	255255
19	4849845
20	4849845
21	1616615
22	3233230
23	74364290
24	74364290
25	74364290
26	37182145
27	37182145
28	37182145
29	1078282205
30	6469693230
31	200560490130
32	200560490130

[1, 2, 6, 6, 30, 5, 35, 35, 35, 70, 770, 770, 10010, 5005, 15015, 15015, 255255, 255255, 4849845, 4849845, 1616615, 3233230, 74364290, 74364290, 74364290, 37182145, 37182145, 37182145, 1078282205, 6469693230, 200560490130, 200560490130]

cp's OEIS Frontend

A072983 Denominator of b(n) = Sum_{k'<=n} 1/k', where k' denotes the squarefree numbers.

Table of values

List of values