login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A053686
as a simple table
n
a(n)
1
2
2
4
3
6
4
14
5
34
6
36
7
52
8
86
9
132
10
154
11
250
12
336
[2,4,6,14,34,36,52,86,132,154,250,336]