Logo

A000387 formatted as a simple table:

n a(n)
2 1
3 0
4 6
5 20
6 135
7 924
8 7420
9 66744
10 667485
11 7342280
12 88107426
13 1145396460
14 16035550531
15 240533257860
16 3848532125880
17 65425046139824
18 1177650830516985
19 22375365779822544
20 447507315596451070
21 9397653627525472260
22 206748379805560389951

[1,0,6,20,135,924,7420,66744,667485,7342280,
 88107426,1145396460,16035550531,240533257860,
 3848532125880,65425046139824,1177650830516985,
 22375365779822544,447507315596451070,
 9397653627525472260,206748379805560389951]

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