A252067 - OEIS

%I #4 Dec 13 2014 10:36:06

%S 92,152,1497,21862,480464,16789564,896763044,73759241675,

%T 9393184984375,1838801806417480,553960321837762317,

%U 257519518174289401204,184540608154581393175420,203698879433082432079178119

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

%C Diagonal of A252075

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 13 2014