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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 2 4 6 or 7
1

%I #4 Dec 17 2014 12:46:34

%S 9013,56643,464384,3675259,29527662,240708592,1956458824,15909752456,

%T 129736526156,1057338390851,8612567396378,70179825074444,

%U 571993707723937,4661686891303170,37989961554799072,309598723190609387

%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 2 4 6 or 7

%C Column 7 of A252457

%H R. H. Hardin, <a href="/A252456/b252456.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 17 2014