login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A156519
as a simple table
n
a(n)
1
1
2
2
3
4
4
11
5
10047
6
7176242
7
28757181899
8
477133046143746
[1,2,4,11,10047,7176242,28757181899, 477133046143746]