login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A011978
as a simple table
n
a(n)
6
1
7
3
8
3
9
3
10
4
11
6
12
6
13
7
14
7
15
10
16
10
17
12
18
12
19
15
20
16
21
17
22
19
[1,3,3,3,4,6,6,7,7,10,10,12,12,15,16,17,19]