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A197523 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4 0

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

%S 1,1,32,289,26282,4538784,2095251333,2629509487169,9372400936796449,

%T 87780282753696748644

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

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

%C Diagonal of A197529

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

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

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

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

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

%K nonn

%O 1,3

%A _R. H. Hardin_ Oct 16 2011

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Last modified April 13 12:21 EDT 2024. Contains 371641 sequences. (Running on oeis4.)