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A185573 Number of (n+1)X3 0..3 arrays with no 2X2 subblock sum equal to any horizontal or vertical neighbor 2X2 subblock sum 1
3392, 125664, 4649320, 173985944, 6508370600, 243047375432, 9075956889192, 339043219347960, 12665293283911784, 473089808175134024, 17671406269801247592, 660095110422452092856, 24657097179457297605704 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 2 of A185575

LINKS

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

EXAMPLE

Some solutions for 5X3

..0..0..0....0..2..0....0..0..0....2..0..2....2..0..2....2..2..2....2..0..2

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

..0..2..2....2..2..2....0..2..0....2..2..2....0..0..0....0..0..0....2..2..2

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

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

CROSSREFS

Sequence in context: A133966 A043671 A172788 * A185926 A221009 A226667

Adjacent sequences:  A185570 A185571 A185572 * A185574 A185575 A185576

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 31 2011

STATUS

approved

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Last modified November 21 21:29 EST 2014. Contains 249791 sequences.