login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A143874
as a simple table
n
a(n)
0
1
1
2
2
3
3
7
4
18
5
111
6
497
7
4630
8
38327
9
702227
10
10398834
[1,2,3,7,18,111,497,4630,38327,702227,10398834]
