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Number of n X 5 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.
0

%I #5 Apr 17 2022 21:32:22

%S 0,459,7320,854959,35993876,2428955613,129447996326,7724887856687,

%T 436026216073506,25287203918142223,1447193400737482466,

%U 83360775579090600519,4786565078482676164476,275268393979592262231620

%N Number of n X 5 arrays of occupancy after each element moves to some horizontal, diagonal or antidiagonal neighbor, without move-in move-out straight through or left turns.

%C Column 5 of A221817.

%e Some solutions for n=3

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

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

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

%Y Cf. A221817.

%K nonn

%O 1,2

%A _R. H. Hardin_, Jan 26 2013