login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A038178
as a simple table
n
a(n)
1
0
2
1
3
2
4
3
5
4
6
5
7
6
8
7
9
8
10
9
11
81
12
512
13
2401
[0,1,2,3,4,5,6,7,8,9,81,512,2401]