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A185606 Number of (n+1)X3 0..3 arrays with every 2X2 subblock determinant equal to some horizontal or vertical neighbor 2X2 subblock determinant 1
580, 11354, 172026, 3017724, 50646550, 873299900, 14968118872, 257702828288, 4434550428074, 76378569041134, 1315590805788744, 22665378299857764, 390507753481807752, 6728559224542235420, 115937828489606023230 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A185609

LINKS

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

EXAMPLE

Some solutions for 5X3

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

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

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

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

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

CROSSREFS

Sequence in context: A127694 A185605 A186784 * A206616 A172763 A172835

Adjacent sequences:  A185603 A185604 A185605 * A185607 A185608 A185609

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified January 19 04:06 EST 2021. Contains 340262 sequences. (Running on oeis4.)