login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A202182
as a simple table
n
a(n)
1
1
2
2
3
5
4
15
5
49
6
180
7
715
8
3081
9
14217
10
69905
11
363926
12
1996922
13
1150036
14
69269925
[1,2,5,15,49,180,715,3081,14217,69905,363926, 1996922,1150036,69269925]