%I #5 Mar 31 2012 12:36:08
%S 226450,8074640,292759792,10573764644,381716567508,13784634186006,
%T 497795278276942,17976310976633484,649156690187966610,
%U 23442274798739620648,846544307284117366816,30570298979230731956070
%N Number of (n+2)X4 0..2 arrays with no 2X2 subblock sum equal to any diagonal or antidiagonal neighbor 2X2 subblock sum
%C Column 2 of A187600
%H R. H. Hardin, <a href="/A187598/b187598.txt">Table of n, a(n) for n = 1..200</a>
%e Some solutions for 6X4
%e ..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
%e ..1..0..0..1....1..0..0..1....1..0..0..1....1..0..0..1....1..0..0..1
%e ..0..0..0..0....1..0..0..0....0..0..0..0....1..0..0..0....0..0..0..0
%e ..2..2..2..2....0..2..1..1....0..2..1..1....0..2..1..0....1..2..0..2
%e ..1..0..1..0....0..0..2..2....2..2..0..0....2..0..1..2....2..2..2..1
%e ..0..2..0..1....2..1..1..1....1..1..2..2....2..1..0..0....2..1..1..0
%K nonn
%O 1,1
%A _R. H. Hardin_ Mar 11 2011
|