%I #5 Dec 15 2014 13:08:45

%S 228,1028,9566,58334,412514,4329476,44099648,415405634,3886445124,

%T 36834748542,350195757374,3322757907650,31500492289092,

%U 298706072056064,2833049748399426,26869277927218244,254824501845465374

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

%C Diagonal of A252228

%H R. H. Hardin, <a href="/A252220/b252220.txt">Table of n, a(n) for n = 1..34</a>

%e Some solutions for n=4

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

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_, Dec 15 2014