login
A187708
Number of 5X5 0..n arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal
0
34, 5030, 81456, 875696, 4225652, 22532156, 67940472, 225606354, 577091334, 1469652502
OFFSET
1,1
COMMENTS
Row 4 of A187705
EXAMPLE
Some n=3 solutions for 5X5
..0..1..1..1..2....2..2..1..2..2....2..2..1..2..2....0..0..1..0..0
..0..1..2..1..2....1..1..0..2..2....1..1..2..1..1....1..3..0..3..3
..1..0..0..0..1....1..2..0..1..0....3..0..0..0..3....0..3..0..3..2
..1..1..1..1..0....2..2..0..1..1....1..1..2..1..0....1..3..0..3..3
..2..2..1..2..0....0..0..1..3..3....3..3..3..3..0....0..0..1..2..2
CROSSREFS
Sequence in context: A297072 A232900 A209943 * A231084 A291976 A212035
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2011
STATUS
approved