login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A090376
as a simple table
n
a(n)
0
1
1
4
2
15
3
80
4
362
5
1832
6
8994
7
46384
8
238838
9
1257824
[1,4,15,80,362,1832,8994,46384,238838,1257824]
