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A185920 Number of (n+1)X3 0..3 arrays with no 2X2 subblock determinant equal to any horizontal or vertical neighbor 2X2 subblock determinant 1
3516, 158806, 7232034, 328811578, 14927163064, 678146728482, 30800191295066, 1399014564276542, 63544539466260468, 2886280358846258546, 131098386145980056748, 5954655860333220640992, 270467958454465457232992 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A185923

LINKS

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

EXAMPLE

Some solutions for 5X3

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

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

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

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

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

CROSSREFS

Sequence in context: A205071 A263302 A205278 * A264450 A187726 A267125

Adjacent sequences:  A185917 A185918 A185919 * A185921 A185922 A185923

KEYWORD

nonn

AUTHOR

R. H. Hardin Feb 06 2011

STATUS

approved

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Last modified February 28 22:24 EST 2020. Contains 332335 sequences. (Running on oeis4.)