A187520 Number of (n+1)X(n+1) 0..5 arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.

170, 3426, 107990, 8174314, 1201064094

Offset: 1

Author

R. H. Hardin Mar 10 2011

Keywords

• nonn

Comments

Column 5 of A187521

Examples

			Some solutions for 4X4
..0..0..3..2....0..5..1..1....0..0..2..0....0..0..3..0....2..2..3..1
..3..2..1..2....0..5..5..1....3..4..1..1....3..5..3..5....1..1..2..2
..0..2..1..3....4..3..3..3....1..4..1..3....0..5..3..4....2..1..2..1
..2..1..0..0....4..4..0..0....1..2..0..0....3..4..3..4....4..0..2..1