A206083 - OEIS

%I #5 Mar 31 2012 12:37:10

%S 3258496,482548752,54618168204,5940013254736,632007271023440,

%T 66942855421767116,7076654901982089620,747858545021411062480,

%U 79025867321989092730124,8350914701263735248657884

%N Number of (n+1)X7 0..3 arrays with the number of clockwise edge increases in every 2X2 subblock equal to one

%C Column 6 of A206085

%H R. H. Hardin, <a href="/A206083/b206083.txt">Table of n, a(n) for n = 1..210</a>

%e Some solutions for n=4

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

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

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

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

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

%K nonn

%O 1,1

%A _R. H. Hardin_ Feb 03 2012