A196313 Number of nX7 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 2,0,4,1,3 for x=0,1,2,3,4.

17, 123, 728, 13277, 132202, 1194982, 11575179, 157085533, 1846682222, 18830197948, 204138811128, 2267817750300, 25185129693320, 280519702209453, 3182410412743494, 35203253665728279, 385376356755364192

Offset: 1

Author

R. H. Hardin Oct 01 2011

Keywords

• nonn

Comments

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

Column 7 of A196314

Examples

			Some solutions for n=4
..0..0..1..1..1..1..0....0..1..3..1..3..1..0....1..1..0..0..0..0..0
..1..1..1..0..0..3..1....0..1..1..0..1..1..1....0..3..1..1..3..1..1
..1..1..1..3..1..1..3....0..1..3..1..3..0..1....0..1..1..1..1..1..1
..0..0..0..1..1..0..1....1..1..0..1..1..0..1....1..1..0..0..0..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..197