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A197310 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4 0

%I #6 Dec 18 2015 18:17:49

%S 1,0,5,160,1033,24704,2241018,282284587,82874179361

%N Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 0,1,1,0,0 for x=0,1,2,3,4

%C Every 0 is next to 0 0's, every 1 is next to 1 1's, every 2 is next to 2 1's, every 3 is next to 3 0's, every 4 is next to 4 0's

%C Diagonal of A197317

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Oct 13 2011

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Last modified April 24 04:14 EDT 2024. Contains 371918 sequences. (Running on oeis4.)