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%I A205089 #6 Mar 31 2012 12:37:04
%S A205089 256,13116,4251766,6997750028,56016870922512,2198408614173601972,
%T A205089 426069670428664499911552,408397032103596887991434131888,
%U A205089 1937279907224716538436705741462507484
%N A205089 Number of (n+1)X(n+1) 0..3 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock equal to the number in all its horizontal and vertical neighbors
%C A205089 Diagonal of A205097
%H A205089 R. H. Hardin, <a href="/A205089/b205089.txt">Table of n, a(n) for n = 1..10</a>
%e A205089 Some solutions for n=4
%e A205089 ..3..1..2..0..1....1..3..3..1..0....2..2..3..0..3....1..1..0..2..1
%e A205089 ..2..3..2..3..0....0..0..3..3..0....0..3..1..2..2....0..3..1..0..2
%e A205089 ..3..1..3..0..2....1..0..0..1..1....3..2..3..0..3....2..1..2..2..0
%e A205089 ..0..3..0..3..2....1..1..0..0..1....2..3..0..3..2....0..3..0..3..2
%e A205089 ..1..0..1..1..3....3..1..1..0..0....3..0..3..1..3....1..0..1..1..3
%K A205089 nonn
%O A205089 1,1
%A A205089 _R. H. Hardin_ Jan 22 2012

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