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Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7
2

%I #4 Dec 14 2014 12:45:34

%S 3905,24031,213689,1741344,14105069,115183261,937980660,7634089505,

%T 62282795715,507708323758,4135550418633,33696297343197,

%U 274629581667408,2238121992115213,18238035152919716,148617809035821872

%N Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 4 6 or 7

%C Column 7 of A252139

%H R. H. Hardin, <a href="/A252138/b252138.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..3..3..2..3..3..3..3..3..3....3..3..3..3..3..3..3..3..2

%e ..2..3..3..3..3..3..3..3..3....3..3..3..3..3..3..3..3..3

%e ..3..3..3..3..3..3..3..3..3....3..3..3..3..3..3..3..3..3

%e ..3..3..3..2..3..3..3..3..2....2..3..3..2..3..3..2..3..3

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 14 2014