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A205768 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock having nonzero determinant and having the same number of clockwise edge increases as its horizontal and vertical neighbors 9
192, 1262, 1262, 8659, 17674, 8659, 62607, 274013, 274013, 62607, 462040, 4570761, 9909258, 4570761, 462040, 3490700, 77757894, 375857889, 375857889, 77757894, 3490700, 26672819, 1336717872, 14312320196, 31592825608, 14312320196 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Table starts

.......192.........1262............8659...............62607

......1262........17674..........274013.............4570761

......8659.......274013.........9909258...........375857889

.....62607......4570761.......375857889.........31592825608

....462040.....77757894.....14312320196.......2656185934184

...3490700...1336717872....545700470559.....223459321298323

..26672819..23044169753..20808476912916...18792440902201504

.205747848.397824057617.793486314120669.1580709916943096718

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..127

EXAMPLE

Some solutions for 5X5

..2..2..0..1..3....2..2..3..2..0....1..0..1..3..2....0..1..2..3..2

..0..3..1..3..0....1..2..2..2..3....0..1..0..1..3....1..2..1..1..3

..2..0..2..0..3....1..1..2..3..3....3..3..2..1..0....0..1..3..2..1

..0..1..0..3..2....1..2..2..2..3....2..0..3..2..1....2..0..2..3..2

..1..3..2..0..3....1..1..2..3..3....1..3..1..0..3....2..1..0..1..0

CROSSREFS

Sequence in context: A305073 A101451 A094949 * A205761 A133064 A183685

Adjacent sequences:  A205765 A205766 A205767 * A205769 A205770 A205771

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Jan 30 2012

STATUS

approved

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Last modified April 7 04:20 EDT 2020. Contains 333292 sequences. (Running on oeis4.)