login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A247053
as a simple table
n
a(n)
0
1
1
1
2
3
3
10
4
44
5
295
6
3136
7
42784
8
642104
9
10246149
10
173647330
[1,1,3,10,44,295,3136,42784,642104,10246149, 173647330]