# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/ Search: id:a221489 Showing 1-1 of 1 %I A221489 #3 Jan 17 2013 17:29:13 %S A221489 0,4096,78880,538159483,178388225956,224856636340095, %T A221489 144288378372479004 %N A221489 Number of 7Xn arrays of occupancy after each element moves to some horizontal or antidiagonal neighbor, without consecutive moves in the same direction %C A221489 Row 7 of A221483 %e A221489 Some solutions for n=3 %e A221489 ..1..2..0....0..1..0....0..2..0....0..2..0....0..2..0....1..1..0....1..2..0 %e A221489 ..0..2..1....2..3..0....1..3..0....1..2..0....1..3..0....1..2..0....0..2..1 %e A221489 ..0..3..1....0..3..1....1..0..0....1..2..1....1..2..1....1..2..1....0..3..0 %e A221489 ..0..2..0....0..2..0....2..2..1....0..2..1....0..0..0....0..3..1....1..1..0 %e A221489 ..1..2..1....2..1..1....0..3..0....0..3..1....2..2..1....0..2..0....1..2..1 %e A221489 ..0..2..1....0..1..1....0..3..0....1..0..1....0..3..1....1..2..0....0..3..1 %e A221489 ..0..1..1....0..3..0....1..1..1....0..3..0....0..2..0....0..2..1....0..1..1 %K A221489 nonn %O A221489 1,2 %A A221489 _R. H. Hardin_ Jan 17 2013 # Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE