A205751 Number of (n+1)X7 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.

11143, 68692, 1320659, 14131118, 233316016, 2917623614, 45262306396, 599332178604, 8912114399864, 121869298507748, 1770968194811994, 24619794382545970, 353501675583395156, 4957479622063690252

Offset: 1

Author

R. H. Hardin Jan 30 2012

Keywords

• nonn

Comments

Column 6 of A205753

Examples

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

Links

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