Logo

A064852 formatted as a simple table:

n a(n)
1 1
2 0
3 0
4 1
5 4
6 18
7 102
8 624
9 4476
10 36248
11 329890
12 3326054
13 36846276
14 444783906
15 5811885808
16 81729607680
17 1230752346352
18 19760412095328
19 336967037143578
20 6082255011151724
21 115852476579789984
22 2322315553090615850

[1,0,0,1,4,18,102,624,4476,36248,329890,3326054,
 36846276,444783906,5811885808,81729607680,
 1230752346352,19760412095328,336967037143578,
 6082255011151724,115852476579789984,
 2322315553090615850]

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