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A252074 Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 or 4 1

%I #4 Dec 13 2014 10:41:46

%S 3279,23091,206747,1669294,13460641,110131513,896763044,7301549024,

%T 59570598626,485457428288,3954090473063,32222610105491,

%U 262627685087219,2140187356615074,17439608164244761,142114394703257745

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

%C Column 7 of A252075

%H R. H. Hardin, <a href="/A252074/b252074.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=2

%e ..2..1..2..2..2..1..2..2..2....2..2..1..2..2..2..2..2..2

%e ..2..2..2..1..2..2..2..2..2....2..2..2..2..1..2..2..1..2

%e ..1..2..2..2..2..2..2..2..2....2..2..2..2..2..2..2..2..2

%e ..2..2..2..2..2..2..1..2..2....2..1..2..2..2..2..2..2..2

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2014

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Last modified April 18 11:29 EDT 2024. Contains 371779 sequences. (Running on oeis4.)