A210152 - OEIS

%I #5 Mar 31 2012 12:37:32

%S 169343,115368738,78387305947,53276322556234,36208249913281496,

%T 24608360596681275093,16724671741551847807857,

%U 11366651677032505181918785,7725160246447746958229463507,5250279729930610551058645077609

%N 1/4 the number of (n+1)X5 0..3 arrays with every 2X2 subblock having one, three or four distinct clockwise edge differences

%C Column 4 of A210156

%H R. H. Hardin, <a href="/A210152/b210152.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

%e ..1..0..2..0..1....1..3..3..1..2....1..0..3..3..3....3..1..0..0..1

%e ..2..2..3..0..0....0..2..2..1..2....2..2..3..2..2....1..1..1..2..2

%e ..1..3..3..2..0....0..0..1..1..2....2..2..3..2..2....3..0..3..3..0

%e ..2..2..1..1..0....2..0..1..3..2....3..1..1..2..1....0..0..3..3..2

%e ..1..1..3..2..2....0..0..0..0..2....1..2..1..3..3....1..0..1..0..2

%K nonn

%O 1,1

%A _R. H. Hardin_ Mar 18 2012