login
The OEIS is supported by
the many generous donors to the OEIS Foundation
.
Hints
(Greetings from
The On-Line Encyclopedia of Integer Sequences
!)
A261511
as a simple table
n
a(n)
1
3
2
5
3
7
4
41
5
43
6
71
7
73
8
641
9
643
10
76541
11
76543
12
87641
13
87643
[3,5,7,41,43,71,73,641,643,76541,76543,87641, 87643]
