A194504 Number of lower triangles of an n X n 0..7 array with each element unequal to the sum mod 8 of its horizontal and vertical neighbors.

7, 343, 118096, 282475256, 4747561509943, 558545864083284007

Offset: 1

Author

R. H. Hardin Aug 27 2011

Keywords

• nonn

Comments

Column 7 of A194505

Examples

			Some solutions for 3X3
..2......3......7......0......6......0......3......6......5......4......7
..7.1....4.2....4.2....6.4....4.4....2.4....5.2....4.4....1.0....2.3....4.4
..6.4.1..4.3.1..2.3.6..1.7.4..5.2.5..4.3.0..6.3.7..0.7.4..0.2.1..7.6.0..0.6.0