A209017 Number of nX6 0..3 arrays with no element equal the average of immediate neighbors vertically above, diagonally above and left, and horizontally left of it.

972, 1901964, 3707858104, 7224768704460, 14081479775124768, 27444816617702590210, 53490209804089514438574, 104252853354306374638934760, 203189693440653459494447382012

Offset: 1

Author

R. H. Hardin Mar 04 2012

Keywords

• nonn

Comments

Column 6 of A209019

Examples

			Some solutions for n=4
..3..0..2..0..2..3....1..0..2..3..2..1....0..2..0..3..0..1....0..1..2..3..0..3
..0..0..0..0..3..2....2..0..3..3..0..2....2..1..2..0..2..2....3..0..2..0..2..2
..1..2..3..2..3..3....0..0..3..2..3..1....0..2..0..2..2..1....1..1..0..0..1..0
..2..3..0..0..1..2....1..2..0..1..0..0....1..3..1..0..1..0....3..2..2..1..0..0
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210