login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A131262
as a simple table
n
a(n)
0
1
1
3
2
14
3
60
4
248
5
1008
[1,3,14,60,248,1008]