login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A217267 Number of n X n arrays of occupancy after each element moves to some horizontal or vertical neighbor. 0

%I #12 Dec 18 2015 18:18:13

%S 0,9,1472,2572816,48909857500,10211121295308649,

%T 23397344246732649325860

%N Number of n X n arrays of occupancy after each element moves to some horizontal or vertical neighbor.

%C Diagonal of A217273

%e Some solutions for n=3

%e ..1..1..2....2..1..1....0..0..1....2..1..1....0..2..1....0..1..2....1..1..0

%e ..1..0..2....2..1..0....3..1..2....1..0..1....1..0..1....1..1..3....1..0..0

%e ..1..1..0....0..2..0....2..0..0....1..2..0....1..1..2....0..0..1....1..3..2

%K nonn,hard,more

%O 1,2

%A _R. H. Hardin_, Sep 29 2012

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified March 28 07:48 EDT 2024. Contains 371235 sequences. (Running on oeis4.)