A232390 - OEIS

%I #4 Nov 23 2013 08:01:21

%S 6224,51240,589172,7492900,109430578,1635435360,24233926664,

%T 367539805270,5620517592220,85329905011324,1308749021295428,

%U 20082836249856018,307175995110951594,4721095324076507232,72479797252036404654

%N Number of (n+1)X(7+1) 0..3 arrays with every element next to itself plus and minus one within the range 0..3 horizontally, vertically or antidiagonally, with no adjacent elements equal

%C Column 7 of A232391

%H R. H. Hardin, <a href="/A232390/b232390.txt">Table of n, a(n) for n = 1..209</a>

%e Some solutions for n=2

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Nov 23 2013