login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A307480
as a simple table
n
a(n)
-1
2
0
5
1
149
2
2543
3
19961
4
412253
5
7601249
6
39999899
7
999999893
[2,5,149,2543,19961,412253,7601249,39999899, 999999893]