A196684 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,0,1,2,3 for x=0,1,2,3,4.

25, 1629, 22461, 796557, 25142624, 741925729, 23029545105, 718199634805, 22138818455076, 682005890331480, 21125269566890884, 654095412346594187, 20229325302713363751, 625878086264793074895, 19368465617464223064077

Offset: 1

Author

R. H. Hardin Oct 05 2011

Keywords

• nonn

Comments

Every 0 is next to 0 4's, every 1 is next to 1 0's, every 2 is next to 2 1's, every 3 is next to 3 2's, every 4 is next to 4 3's

Column 7 of A196685

Examples

			Some solutions for n=4
..0..0..2..1..1..2..0....0..1..1..0..1..2..0....0..1..1..0..0..1..1
..0..2..1..0..0..1..2....0..1..2..0..1..1..0....0..2..1..2..0..2..0
..0..1..2..2..1..1..1....0..2..0..0..1..1..1....0..0..0..1..1..1..2
..1..2..0..1..1..0..0....0..1..2..1..1..0..1....0..0..0..1..1..0..1
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..32