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A186218

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant.

0, 175, 175, 609, 1969, 609, 3593, 18873, 18873, 3593, 15055, 197619, 308593, 197619, 15055, 76263, 2008031, 6275745, 6275745, 2008031, 76263, 353985, 20738153, 116461359, 255375977, 116461359, 20738153, 353985, 1729733, 213108423

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

1,2

COMMENTS

Table starts

........0.........175..........609...........3593..........15055..........76263

......175........1969........18873.........197619........2008031.......20738153

......609.......18873.......308593........6275745......116461359.....2259545215

.....3593......197619......6275745......255375977.....9406230423...363322785761

....15055.....2008031....116461359.....9406230423...660028898887.49524283508081

....76263....20738153...2259545215...363322785761.49524283508081

...353985...213108423..43035959317.13767728347159

..1729733..2194753479.826432933951

..8225815.22587046821

.39664199

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..60

EXAMPLE

Some solutions for 4X3

..1..0..0....0..0..1....2..2..2....2..0..2....2..2..2....1..2..0....1..2..1

..1..0..1....2..0..2....2..1..0....0..0..1....1..1..1....0..0..0....0..0..0

..2..0..1....1..0..0....0..0..0....0..0..2....1..1..1....2..2..2....0..1..2

..0..0..1....0..0..0....2..0..1....1..0..0....2..1..0....0..0..0....0..1..2

CROSSREFS

Sequence in context: A213866 A252717 A187425 * A245035 A102538 A045145

Adjacent sequences: A186215 A186216 A186217 * A186219 A186220 A186221

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin, Feb 15 2011

STATUS

approved

URL: https://oeis.org/A186218

⇱ A186218 - OEIS