A206230 Number of (n+1)X(n+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly two equal edges, and new values 0..3 introduced in row major order.

15, 256, 4456, 283728, 10915392, 1448239080, 649065145152, 203396423662488, 222950396746461504, 842104767130879914696, 2305567526828592241306992, 22136848571138455592306188104, 737206270850592131066195723493312

Offset: 1

Author

R. H. Hardin Feb 05 2012

Keywords

• nonn

Comments

Diagonal of A206238

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..16