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A221109 Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops 0

%I

%S 0,0,8,3706,11678172,326416281638,82293038769560932

%N Number of n X n arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without 2-loops

%C Diagonal of A221114

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Jan 02 2013

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Last modified July 4 22:27 EDT 2022. Contains 355086 sequences. (Running on oeis4.)