A229365 Number of n X n 0..2 arrays avoiding 11 horizontally, 22 vertically and 00 antidiagonally.

3, 38, 1610, 222990, 104382552, 162794962814, 851668326534130, 14897378230939391994, 872764112558460116016396, 171094770747292212524499798502, 112292092887713869652391305250607824

Offset: 1

Author

R. H. Hardin Sep 21 2013

Keywords

• nonn

Comments

Diagonal of A229372

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..13