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Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns
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%I #3 Jan 26 2013 10:41:14

%S 0,333,40983,4715043,570066685,68489860450,8224749361083,

%T 987885812260577,118641972922938733,14248324215718943851,

%U 1711142647446159966808

%N Number of nX5 arrays of occupancy after each element moves to some horizontal, vertical or antidiagonal neighbor, without 2-loops or left turns

%C Column 5 of A221828

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Jan 26 2013