login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A102549
as a simple table
n
a(n)
0
1
1
4
2
10
3
23
4
57
5
132
6
301
7
701
8
1750
[1,4,10,23,57,132,301,701,1750]