A233238 Number of nX7 0..5 arrays with no element x(i,j) adjacent to value 5-x(i,j) horizontally, diagonally or antidiagonally, top left element zero, and 1 appearing before 2 3 and 4, and 2 appearing before 3 in row major order.

2136, 25622596, 347931872810, 4737126288340919, 64509967001742933388, 878515500504975619593232, 11963921132630138069523033663, 162928803282037857377835121784933, 2218820778125412343542517310100092932

Offset: 1

Author

R. H. Hardin, Dec 06 2013

Keywords

• nonn

Comments

Column 7 of A233239

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..148