login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A222351
as a simple table
n
a(n)
1
987
2
12087
3
69142
4
312019
5
1284780
6
5094040
7
19896840
8
77321250
[987,12087,69142,312019,1284780,5094040,19896840, 77321250]