login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A123448
as a simple table
n
a(n)
1
1
2
2
3
4
4
11
5
33
6
142
7
776
8
5699
9
50723
10
524572
11
6037518
12
75912033
13
1029974969
14
14974215412
[1,2,4,11,33,142,776,5699,50723,524572,6037518, 75912033,1029974969,14974215412]