A233071 Number of nX6 0..3 arrays with no element x(i,j) adjacent to value 3-x(i,j) horizontally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 in row major order.

122, 9801, 952869, 95264272, 9622519979, 975239425635, 98950914937033, 10043490383783484, 1019526537402445651, 103496939942560822667, 10506573357624046461778, 1066586510863326927801797

Offset: 1

Author

R. H. Hardin, Dec 03 2013

Keywords

• nonn

Comments

Column 6 of A233073

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..210
• R. H. Hardin, Empirical recurrence of order 58

Formula

Empirical recurrence of order 58 (see link above)