login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A223926
as a simple table
n
a(n)
1
3
2
54
3
1116
4
21334
5
386495
6
6621074
7
108796955
8
1735753333
9
27144561576
[3,54,1116,21334,386495,6621074,108796955, 1735753333,27144561576]