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A203486 Number of nX3 0..2 arrays with row sums equal and column sums unequal to adjacent columns 1
12, 80, 624, 3760, 25002, 171068, 1107888, 7411872, 50469114, 335270710, 2266967088, 15497479060, 104719636176, 715192200880, 4919017621164, 33647413101184, 231673960276602, 1602349695229334, 11054192845643568 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 3 of A203491

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..106

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Sequence in context: A038734 A258591 A058962 * A187011 A277783 A009500

Adjacent sequences:  A203483 A203484 A203485 * A203487 A203488 A203489

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 02 2012

STATUS

approved

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Last modified August 25 03:03 EDT 2019. Contains 326318 sequences. (Running on oeis4.)