login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A123819
as a simple table
n
a(n)
1
1
2
1
3
5
4
8
5
65
6
126
7
1023
8
2187
9
17585
10
39606
11
315326
12
737302
[1,1,5,8,65,126,1023,2187,17585,39606,315326, 737302]