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A196725 Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 2,1,4,0,3 for x=0,1,2,3,4 1

%I #6 Dec 18 2015 18:17:48

%S 1,5,76,3394,547874,280203939,466328648058,2525576718158704,

%T 44298467976731953802,2511317101071327391390891

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

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

%C Diagonal of A196729

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_ Oct 05 2011

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Last modified May 26 04:31 EDT 2024. Contains 372807 sequences. (Running on oeis4.)