A198980 Number of nX6 0..5 arrays with values 0..5 introduced in row major order and no element equal to any horizontal or vertical neighbor.

52, 174454, 1112962873, 7267830860056, 47495195899845037, 310387893630465965693, 2028430770889558380053172, 13256095277348005849607178346, 86630544487196927129344081838138

Offset: 1

Author

R. H. Hardin Nov 01 2011

Keywords

• nonn

Comments

Column 6 of A198982

Examples

			Some solutions with all values from 0 to 5 for n=4
..0..1..0..2..0..2....0..1..0..1..0..1....0..1..0..2..0..3....0..1..0..2..3..4
..1..0..1..0..3..1....1..0..1..0..2..0....1..0..1..0..2..4....1..0..1..0..4..0
..0..3..0..1..4..5....0..3..0..1..4..2....0..3..0..1..4..3....0..3..0..1..0..2
..3..0..1..2..1..0....3..0..1..0..5..1....3..0..1..4..2..5....3..0..1..0..1..5
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..28