A205758 Number of 7X(n+1) 0..2 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..2 introduced in row major order.

69338, 542718, 3797920, 34977686, 292986186, 2917623614, 26828234464, 279459906314, 2723713739666, 29190925331248, 295846244829092, 3230320670138002, 33638289242782070, 371863257488907590

Offset: 1

Author

R. H. Hardin Jan 30 2012

Keywords

• nonn

Comments

Row 6 of A205753

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..28