A194614 Half the number of lower triangles of an (n+1) X (n+1) 0..7 array with no element equal to the average of its horizontal and vertical neighbors.

184, 82057, 279618492, 7416076339907, 1525002446582690839, 2430369828996738172677912

Offset: 1

Author

R. H. Hardin, Aug 30 2011

Keywords

• nonn

Comments

Column 7 of A194615.

Examples

			Some solutions for 3 X 3
..6......0......5......0......2......1......4......7......6......4......0
..4.1....1.4....6.5....2.6....0.1....2.6....0.6....4.2....5.4....3.6....6.4
..1.6.5..7.5.2..4.0.5..1.5.7..0.6.2..4.3.1..0.6.4..0.6.3..3.7.6..1.2.7..1.7.6
		

Crossrefs

Cf. A194615.