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Number of n X n 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..3 array without adjacent equal elements in the latter
5

%I #5 Dec 18 2015 18:18:40

%S 4,154,34022,33330044,151503568022,3239971166331308

%N Number of n X n 0..3 arrays of the median of the corresponding element, the element to the east and the element to the south in a larger (n+1)X(n+1) 0..3 array without adjacent equal elements in the latter

%C Diagonal of A229320

%e Some solutions for n=3

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Sep 19 2013