A205245 - OEIS

%I #4 Mar 31 2012 12:37:05

%S 4143102,225349124,18384097800,1253758820754,98979850888752,

%T 7109556887269900,555164681243665142

%N Number of (n+1)X8 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors

%C Column 7 of A205246

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Jan 24 2012