A233228 Number of nX6 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally, antidiagonally or vertically, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

452, 616454, 1142726121, 2131764323784, 3987381898274165, 7462045099033787721, 13966565723905519312347, 26141937448057102691381982, 48931705939631684079610274144, 91589174857476172550555533830040

Offset: 1

Author

R. H. Hardin, Dec 06 2013

Keywords

• nonn

Comments

Column 6 of A233230

Examples

			Some solutions for n=2
..0..0..1..1..5..2....0..0..0..1..2..5....0..0..1..2..2..1....0..0..1..2..0..3
..3..1..0..2..1..2....3..0..2..1..1..2....3..0..1..1..2..5....1..1..1..2..4..3
		

Links

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