A233229 Number of nX7 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.

2136, 9757236, 59679029456, 366805442634477, 2262465262533395122, 13966565723905519312347, 86240738075580821512843673, 532562944711463255634918419168, 3288824486303682666484477919564597

Offset: 1

Author

R. H. Hardin, Dec 06 2013

Keywords

• nonn

Comments

Column 7 of A233230

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..90