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A187704
Number of (n+1)X(n+1) 0..5 arrays with each 2X2 subblock off diagonal and antidiagonal nonsingular and the array of 2X2 subblock determinants antisymmetric about the diagonal and antidiagonal
0
170, 93476, 2904, 4225652, 12898
OFFSET
1,1
COMMENTS
Column 5 of A187705
EXAMPLE
Some solutions for 4X4
..3..2..0..0....0..0..1..0....2..2..4..0....1..1..0..0....2..2..4..0
..3..2..2..4....3..2..1..0....5..5..5..0....1..1..2..4....2..2..2..0
..5..2..2..2....2..2..1..2....0..2..2..2....3..1..2..3....0..2..2..2
..0..0..2..2....4..4..1..2....0..5..0..0....0..0..2..3....0..4..2..2
CROSSREFS
Sequence in context: A098244 A250957 A114048 * A263059 A243294 A015975
KEYWORD
nonn
AUTHOR
R. H. Hardin Mar 12 2011
STATUS
approved