Logo

A045501 formatted as a simple table:

n a(n)
1 1
2 1
3 4
4 14
5 54
6 233
7 1101
8 5625
9 30846
10 180474
11 1120666
12 7352471
13 50772653
14 367819093
15 2787354668
16 22039186530
17 181408823710
18 1551307538185
19 13756835638385
20 126298933271289
21 1198630386463990
22 11742905240821910

[1,1,4,14,54,233,1101,5625,30846,180474,1120666,
 7352471,50772653,367819093,2787354668,22039186530,
 181408823710,1551307538185,13756835638385,
 126298933271289,1198630386463990,
 11742905240821910]

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 2 11:54 EST 2009. Contains 167921 sequences.


AT&T Labs Research