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A197606 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,2,1,1,1 for x=0,1,2,3,4 0

%I #6 Dec 18 2015 18:17:50

%S 1,5,67,3569,545364,273369257,449467029436,2390166008989465

%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 4,2,1,1,1 for x=0,1,2,3,4

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

%C Diagonal of A197613

%e Some solutions containing all values 0 to 4 for n=4

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

%e ..3..1..1..2....2..1..4..1....2..1..4..1....2..1..4..1....2..1..1..0

%e ..1..4..1..2....0..1..1..0....0..1..1..3....2..1..1..0....2..1..4..1

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Oct 16 2011

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Last modified April 23 05:20 EDT 2024. Contains 371906 sequences. (Running on oeis4.)