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 A187522 Number of 3X3 0..n arrays with the array of 2X2 subblock determinants antisymmetric and no off-diagonal 2X2 subblock determinant zero 1
 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 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Row 2 of A187521 LINKS R. H. Hardin, Table of n, a(n) for n = 1..53 EXAMPLE 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 CROSSREFS Sequence in context: A111826 A213797 A064753 * A138913 A192667 A127636 Adjacent sequences:  A187519 A187520 A187521 * A187523 A187524 A187525 KEYWORD nonn AUTHOR R. H. Hardin Mar 10 2011 STATUS approved

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