login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A065847
as a simple table
n
a(n)
1
1
2
2
3
4
4
8
5
21
6
60
7
269
8
1147
9
4250
10
17883
11
71966
12
342060
13
1724337
14
8428101
15
37186164
16
175845403
[1,2,4,8,21,60,269,1147,4250,17883,71966,342060, 1724337,8428101,37186164,175845403]