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A186784 Number of (n+1)X3 0..3 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants 1
580, 11354, 63504, 739334, 8499038, 97501656, 1029483706, 11412065338, 126395136040, 1397513210452, 15414550870912, 170592128024378, 1886912171155070, 20866267731905124, 230752006350156298 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A186786

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..200

EXAMPLE

Some solutions for 5X3

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

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

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

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

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

CROSSREFS

Sequence in context: A185609 A127694 A185605 * A185606 A206616 A172763

Adjacent sequences:  A186781 A186782 A186783 * A186785 A186786 A186787

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 26 2011

STATUS

approved

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Last modified September 25 16:29 EDT 2017. Contains 292499 sequences.