login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A147274
as a simple table
n
a(n)
1
1
2
1
3
1
4
1
5
1
6
5
7
25
8
85
9
377
10
1825
11
10067
12
61143
[1,1,1,1,1,5,25,85,377,1825,10067,61143]