A197888 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 0,2,1,1,1 for x=0,1,2,3,4.

3, 78, 529, 10827, 92843, 1134527, 13253562, 145351090, 1728849664, 19259087568, 227927217325, 2573394846501, 29961925871053, 341720932452731, 3939440439598059, 45203853693284547, 520558824415292051

Offset: 1

Author

R. H. Hardin Oct 19 2011

Keywords

• nonn

Comments

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

Column 7 of A197889

Examples

			Some solutions containing all values 0 to 4 for n=4
..1..0..2..1..0..1..2....0..1..2..2..1..3..1....1..2..2..1..0..1..2
..2..1..1..0..2..1..1....1..3..1..1..4..1..2....0..1..1..3..2..1..1
..2..1..4..1..1..0..1....2..2..1..1..1..1..2....2..1..0..1..1..4..1
..1..3..1..2..0..1..2....1..1..1..2..2..1..1....1..0..1..2..0..1..2
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..63