A187522
Number of 3X3 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.
Original entry on oeis.org
6, 98, 450, 1590, 3426, 8546, 13992, 26158, 41748, 67588, 90082, 148792, 187474, 260222, 355100, 480620, 569610, 778354, 903974, 1192760, 1466488, 1766846, 1994060, 2603040, 2993262, 3493594, 4070056, 4892770, 5366122, 6633208, 7221322
Offset: 1
Some solutions for 3X3
..0..0..3....2..2..2....2..1..2....3..3..3....0..3..2....2..3..2....1..1..1
..3..3..2....1..1..2....2..1..1....3..3..1....0..2..2....2..3..0....2..2..0
..0..3..2....3..1..2....3..2..2....1..3..1....1..1..1....0..3..0....0..1..0
A187517
Number of (n+1)X(n+1) 0..2 arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.
Original entry on oeis.org
31, 98, 354, 1780, 12008, 157694, 2808560, 115232300, 6691316378
Offset: 1
Some solutions for 4X4
..0..2..0..2....1..1..0..1....0..0..1..0....0..2..0..1....0..0..2..0
..0..2..2..0....2..2..2..1....2..2..2..2....0..2..1..0....2..2..1..2
..2..2..2..2....2..1..1..0....0..1..1..0....1..2..1..1....0..2..1..0
..0..2..0..0....0..1..2..0....2..0..2..0....0..1..0..0....2..2..2..0
A187518
Number of (n+1)X(n+1) 0..3 arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.
Original entry on oeis.org
64, 450, 4200, 73764, 2048596, 129034386, 13881494364
Offset: 1
Some solutions for 4X4
..0..0..1..0....0..1..0..1....2..2..2..3....3..2..3..3....2..2..3..2
..2..2..2..1....0..3..3..2....2..2..1..0....3..2..1..3....2..2..1..2
..2..3..3..3....1..1..1..1....1..2..1..3....1..2..1..1....0..2..1..1
..1..1..0..0....0..3..2..2....0..3..0..0....3..0..1..1....2..3..2..2
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.
Original entry on oeis.org
113, 1590, 34776, 1655170, 144075566
Offset: 1
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
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.
Original entry on oeis.org
170, 3426, 107990, 8174314, 1201064094
Offset: 1
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
A187523
Number of 4X4 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero.
Original entry on oeis.org
2, 354, 4200, 34776, 107990, 475370, 978568, 2790760, 5647886, 11787078, 17703910, 41527872, 57261832
Offset: 1
Some solutions for 4X4
..2..2..1..1....2..3..1..2....1..3..1..3....2..2..3..3....1..1..0..3
..1..1..1..0....2..3..2..1....1..3..2..2....1..1..1..2....1..1..2..1
..2..1..1..1....3..3..2..2....2..3..2..1....0..1..1..0....3..1..2..3
..3..2..1..1....0..1..0..0....0..2..2..1....3..1..3..0....0..2..0..0
A187524
Number of 5 X 5 0..n arrays with the array of 2 X 2 subblock determinants antisymmetric and no off-diagonal 2 X 2 subblock determinant zero.
Original entry on oeis.org
0, 1780, 73764, 1655170, 8174314, 70304076, 193687886
Offset: 1
Some solutions for 5 X 5
..1..2..2..2..2....0..0..2..1..2....2..2..1..0..1....0..0..3..0..2
..1..2..1..2..1....2..2..2..3..0....1..1..1..2..3....2..1..1..2..0
..0..2..1..1..0....0..2..2..1..2....2..1..1..1..2....3..3..3..3..1
..1..1..1..1..1....2..0..2..1..1....2..0..1..1..1....2..0..1..1..0
..0..2..3..2..2....2..3..3..2..2....2..1..2..3..3....3..2..1..2..0
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