A222376 Number of nX5 0..3 arrays with no more than floor(nX5/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..3 order.

5, 63, 498, 20340, 271141, 16985929, 286125939, 20743320247, 373691424190, 27882988244881, 509605326368069, 38307687628079400, 703184052898346968, 52999539133762131621, 974700127061083249468, 73589121388228405830161

Offset: 1

Author

R. H. Hardin Feb 17 2013

Keywords

• nonn

Comments

Column 5 of A222378

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..21