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A229313 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.

%I A229313 #7 Jul 23 2025 05:39:59
%S A229313 4,154,34022,33330044,151503568022,3239971166331308
%N A229313 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 A229313 Diagonal of A229320
%e A229313 Some solutions for n=3
%e A229313 ..2..1..3....3..1..1....2..1..2....2..2..2....0..1..2....1..2..3....1..0..2
%e A229313 ..0..2..1....2..0..2....1..2..1....1..1..0....1..2..0....2..3..0....2..2..2
%e A229313 ..2..0..1....0..2..0....2..0..1....3..0..1....3..2..3....1..0..2....3..2..0
%K A229313 nonn
%O A229313 1,1
%A A229313 _R. H. Hardin_ Sep 19 2013