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A252901 Number of (n+2)X(3+2) 0..3 arrays with every consecutive three elements in every row and column having exactly two distinct values, and new values 0 upwards introduced in row major order 1
19320, 306680, 4385530, 66702186, 990142582, 14924920644, 223188511528, 3356288767614, 50316155376656, 755701431331706, 11339970860065408, 170249371855057578, 2555320401273992394, 38360187030527862622 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A252904

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=1

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

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

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

CROSSREFS

Sequence in context: A184667 A280555 A031831 * A126721 A323558 A321642

Adjacent sequences:  A252898 A252899 A252900 * A252902 A252903 A252904

KEYWORD

nonn

AUTHOR

R. H. Hardin, Dec 24 2014

STATUS

approved

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Last modified September 21 11:18 EDT 2019. Contains 327253 sequences. (Running on oeis4.)