Data related to no-3-in-line problem

Paul D. Hanna pauldhanna at juno.com
Thu May 12 07:08:21 CEST 2005


Also, the link that David referrenced gives the table:
http://wwwhomes.uni-bielefeld.de/achim/no3in/table_old.txt
  
which extends sequence A000755 by 4 terms to be: 
  
1,2,11,32,50,132,380,368,1135,1120,4348,3622,10568
  
over the current:  
http://www.research.att.com/projects/OEIS?Anum=A000755
Sequence:  1,2,11,32,50,132,380,368,1135
Name:      No-3-in-line problem on n X n grid.
 
-- Paul
 
On Thu, 12 May 2005 01:03:44 -0400 Gerald McGarvey
<Gerald.McGarvey at comcast.net> writes:

For the convenience of those interested in this problem:
Related entry A000769 has links to other related sequences and articles
including this one

No-3-in-line problem: number of ways of placing 2n points on n X n
grid so no 3 are in a line.

http://www.research.att.com/cgi-bin/access.cgi/as/njas/sequences/eisA.cgi
?Anum=A000769
  Gerald 

At 11:49 PM 5/11/2005, David Wilson wrote:

Off of this page

http://wwwhomes.uni-bielefeld.de/achim/no3in/readme.html

there seems to be a lot of data on the no-3-in-line problem on the n x n
grid.  Probably potential for many new seqences and extensions of
existing sequences if I knew how to interpret the data.

- David W. Wilson
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