login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A362223
as a simple table
n
a(n)
1
1
2
4
3
20
4
113
5
682
6
4294
7
27830
8
184240
9
1239575
10
8446660
11
58150684
12
403735761
[1,4,20,113,682,4294,27830,184240,1239575,8446660, 58150684,403735761]