login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A320721
as a simple table
n
a(n)
0
0
1
15
2
38
3
58
4
89
5
582
6
1964
7
19526
8
596667
9
30104309
10
140410607143
11
3753516452901780134
[0,15,38,58,89,582,1964,19526,596667,30104309, 140410607143,3753516452901780134]