A194619 Half the number of lower triangles of a 6 X 6 0..n array with no element equal to the average of its horizontal and vertical neighbors.

29241, 205801866, 214726600125, 38969955227338, 2481372954501732, 77572756670578163, 1525002446582690839, 20406859321612678912, 206774026729010778294, 1658596651668908616516, 11050418508749912011440

Offset: 1

Author

R. H. Hardin, Aug 30 2011

Keywords

• nonn

Examples

			Some solutions for n=2
..0............0............0............0............0............0
..1.0..........1.0..........1.0..........1.0..........1.0..........1.0
..0.0.2........0.0.1........0.0.1........0.0.1........0.0.1........0.0.1
..0.0.0.0......0.0.0.2......0.0.1.0......0.0.0.0......0.0.1.2......0.0.0.2
..1.1.0.1.0....1.1.2.0.0....1.0.0.1.0....2.2.0.1.0....2.1.0.2.2....1.2.0.2.1
..1.0.1.0.0.2..1.0.0.2.2.1..2.1.2.2.0.1..0.0.0.1.1.0..0.1.0.1.0.2..2.2.0.2.1.2
		

Crossrefs

Row 5 of A194615.