Logo

A007018 formatted as a simple table:

n a(n)
0 1
1 2
2 6
3 42
4 1806
5 3263442
6 10650056950806
7 113423713055421844361000442
8 12864938683278671740537145998360961546653259485195806 

[1,2,6,42,1806,3263442,10650056950806,
 113423713055421844361000442,
 12864938683278671740537145998360961546653259485195806]

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 5 23:38 EST 2009. Contains 170428 sequences.

AT&T Labs Research

Legal Notice
© 2009 AT&T Intellectual Property. All Rights Reserved.