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A187425 T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants 6
0, 175, 175, 609, 1969, 609, 3593, 6512, 6512, 3593, 15055, 44512, 46764, 44512, 15055, 76263, 319792, 602024, 602024, 319792, 76263, 353985, 2142214, 5254072, 10014852, 5254072, 2142214, 353985, 1729733, 13328138, 56472058, 139898890 (list; table; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Table starts
........0.......175........609........3593.......15055.......76263......353985
......175......1969.......6512.......44512......319792.....2142214....13328138
......609......6512......46764......602024.....5254072....56472058...533853394
.....3593.....44512.....602024....10014852...139898890..2183222530.33876667824
....15055....319792....5254072...139898890..2868461180.72355701549
....76263...2142214...56472058..2183222530.72355701549
...353985..13328138..533853394.33876667824
..1729733..88129302.5585054046
..8225815.580578920
.39664199
LINKS
EXAMPLE
Some solutions for 4X3
..0..2..2....1..1..0....1..2..2....2..2..0....0..1..1....0..0..0....2..1..1
..2..2..0....1..2..1....1..1..2....2..2..0....0..1..2....0..0..1....0..0..0
..0..1..1....0..1..1....1..0..2....1..2..1....0..0..1....2..2..2....2..2..2
..0..2..2....0..2..2....0..0..0....1..2..1....0..0..2....2..1..0....2..1..0
CROSSREFS
Column 1 is A186211
Sequence in context: A224433 A213866 A252717 * A186218 A245035 A102538
KEYWORD
nonn,tabl
AUTHOR
R. H. Hardin Mar 09 2011
STATUS
approved

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Last modified July 25 14:57 EDT 2024. Contains 374611 sequences. (Running on oeis4.)