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A186786 T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants 3
0, 580, 580, 2366, 11354, 2366, 22236, 63504, 63504, 22236, 118616, 739334, 696596, 739334, 118616, 891506, 8499038, 17120960, 17120960, 8499038, 891506, 5489048, 97501656, 281080458, 658080772, 281080458, 97501656, 5489048, 38326452 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Table starts

.......0......580......2366.....22236....118616.....891506....5489048.38326452

.....580....11354.....63504....739334...8499038...97501656.1029483706

....2366....63504....696596..17120960.281080458.5705992444

...22236...739334..17120960.658080772

..118616..8499038.281080458

..891506.97501656

.5489048

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..31

EXAMPLE

Some solutions for 4X3

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

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

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

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

CROSSREFS

Column 1 is A185605

Sequence in context: A250727 A252985 A097769 * A185609 A127694 A185605

Adjacent sequences:  A186783 A186784 A186785 * A186787 A186788 A186789

KEYWORD

nonn,tabl

AUTHOR

R. H. Hardin Feb 26 2011

STATUS

approved

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Last modified September 20 12:42 EDT 2017. Contains 292271 sequences.