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Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7
1

%I #4 Dec 18 2014 06:58:13

%S 17709,231372,767176,1808374,5219625,17585706,59046724,209788816,

%T 715958046,2479308557,9956085785,36534703306,134720021233,

%U 603603095063,2333291306912,8984713129479,43067974596056,171022136230496

%N Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 2 5 6 or 7 and every 3X3 diagonal and antidiagonal sum not equal to 0 2 5 6 or 7

%C Column 7 of A252514

%H R. H. Hardin, <a href="/A252513/b252513.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=1

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 18 2014