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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 5 6 or 8
1

%I #4 Dec 17 2014 15:31:28

%S 17061,24331,213791,1741406,14105131,115183323,937980722,7634089567,

%T 62282795777,507708323820,4135550418695,33696297343259,

%U 274629581667470,2238121992115275,18238035152919778,148617809035821934

%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 5 6 or 8

%C Column 7 of A252473

%H R. H. Hardin, <a href="/A252472/b252472.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..3..3..3..3..3..3..3..1..3....3..3..3..3..1..3..3..3..1

%e ..3..3..3..3..1..3..3..3..3....3..3..1..3..3..3..1..3..3

%e ..1..3..3..3..3..3..3..3..1....3..3..3..3..3..3..3..3..3

%e ..3..3..3..1..3..3..3..3..3....3..3..3..1..3..3..3..3..3

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2014