A031882
formatted as a simple table:
n
a(n)
0
1
1
3
2
7
3
9
4
33
5
99
6
111
7
777
8
9999
9
33333
10
55555
11
111111
12
777777
13
7777777
14
55555555
[1,3,7,9,33,99,111,777,9999,33333,55555,111111, 777777,7777777,55555555]
Lookup
|
Welcome
|
Find friends
|
Music
|
Plot 2
|
Demos
|
Index
|
Browse
|
More
|
WebCam
Contribute new seq. or comment
|
Format
|
Transforms
|
Puzzles
|
Hot
|
Classics
More pages
|
Superseeker
|
Maintained by
N. J. A. Sloane
(
njas@research.att.com
)
Last modified December 8 08:31 EST 2009. Contains 170430 sequences.
AT&T Labs Research
Legal Notice
© 2009 AT&T Intellectual Property.
All Rights Reserved.
