login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A278566
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
2
7
2
8
1
9
1
10
3
11
3
12
1
13
2
14
1
15
4
16
5
17
3
18
2
19
1
20
1
21
1
[1,1,1,1,1,2,2,1,1,3,3,1,2,1,4,5,3,2,1,1,1]