A187519 Number of (n+1)X(n+1) 0..4 arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero

113, 1590, 34776, 1655170, 144075566

Offset

1,1

Comments

Column 4 of A187521

Links

Table of n, a(n) for n=1..5.

Example

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

Crossrefs

Sequence in context: A300921 A075030 A079098 * A301529 A008362 A262074

Adjacent sequences: A187516 A187517 A187518 * A187520 A187521 A187522

Keyword

nonn

Author

R. H. Hardin Mar 10 2011

Status

approved