login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A223150 Number of nX2 0..1 arrays with no adjacent rows or columns having the same least squares slope fit to a straight line, with a single point array taken as having zero slope 1

%I

%S 0,10,12,66,108,402,876,2754,6348,18122,43660,119970,293196,786930,

%T 1963628,5195330,13008844,34140458,85957676,224448290,567203884,

%U 1475618386,3735881132,9694028482,24581846668,63682969994,161696209356

%N Number of nX2 0..1 arrays with no adjacent rows or columns having the same least squares slope fit to a straight line, with a single point array taken as having zero slope

%C Column 2 of A223154

%H R. H. Hardin, <a href="/A223150/b223150.txt">Table of n, a(n) for n = 1..72</a>

%e Some solutions for n=3

%e ..0..0....0..0....0..1....1..0....0..1....1..1....1..0....0..1....0..1....1..1

%e ..0..1....1..0....1..1....0..0....1..0....1..0....0..1....1..0....0..0....0..1

%e ..1..0....0..1....1..0....0..1....0..0....0..1....0..0....1..1....1..0....1..0

%K nonn

%O 1,2

%A _R. H. Hardin_ Mar 16 2013

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 11:00 EDT 2020. Contains 333083 sequences. (Running on oeis4.)