login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A003864
as a simple table
n
a(n)
1
1
2
8
3
21
4
21
5
27
6
28
7
35
8
35
9
42
10
48
11
56
12
84
13
105
14
120
15
162
16
168
17
189
18
216
[1,8,21,21,27,28,35,35,42,48,56,84,105,120,162, 168,189,216]