login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A147475
as a simple table
n
a(n)
1
1
2
1
3
1
4
9
5
25
6
93
7
633
8
7225
9
110262
10
1975143
11
50880872
12
1933660635
13
104069532412
14
7622213781825
[1,1,1,9,25,93,633,7225,110262,1975143,50880872, 1933660635,104069532412,7622213781825]