login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A121280
as a simple table
n
a(n)
1
1
2
148
3
1924
4
13807
5
49702
6
2458885
7
9470344
8
186557266
9
523551502
10
191278379839
11
4368196101671
[1,148,1924,13807,49702,2458885,9470344,186557266, 523551502,191278379839,4368196101671]