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%I #6 Nov 20 2012 16:56:02
%S 256,1528,76214,1608968,49466988,1326731972,38497164700,1087736452738,
%T 31117471227206,886142080344254,25291550132660836,721303064302959840,
%U 20578939287128886034,587046975916765583280,16747555229309088955058
%N Number of 4Xn arrays of the minimum value of corresponding elements and their horizontal or antidiagonal neighbors in a random 0..3 4Xn array
%C Row 4 of A218522
%H R. H. Hardin, <a href="/A218525/b218525.txt">Table of n, a(n) for n = 1..90</a>
%e Some solutions for n=3
%e ..3..1..1....1..0..0....1..1..1....3..3..3....3..0..2....0..0..1....3..0..2
%e ..3..1..2....1..0..1....3..1..2....3..3..3....0..0..0....1..2..2....0..0..1
%e ..1..0..0....0..0..3....2..2..2....3..1..0....1..0..2....3..2..2....3..0..2
%e ..1..0..3....3..0..0....2..1..1....0..0..0....1..1..1....2..1..1....0..0..2
%K nonn
%O 1,1
%A _R. H. Hardin_ Oct 31 2012
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