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 A231061 Number of nX6 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero 1

%I #4 Nov 03 2013 07:32:36

%S 0,230,7818,313944,12582344,505135612,20286249268,814871303100,

%T 32735101347962,1315094209121840,52833398277964844,

%U 2122581619644690616,85275101975137588046,3425950358334849580350,137638633914499167727240

%N Number of nX6 0..3 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 4, no adjacent elements equal, and upper left element zero

%C Column 6 of A231063

%H R. H. Hardin, <a href="/A231061/b231061.txt">Table of n, a(n) for n = 1..123</a>

%e Some solutions for n=4

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

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

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

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

%K nonn

%O 1,2

%A _R. H. Hardin_, Nov 03 2013

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Last modified May 31 17:17 EDT 2023. Contains 363068 sequences. (Running on oeis4.)