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A207531
Number of nX4 0..3 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column
1
214, 45796, 6758694, 1066263778, 166743944836, 26097329476130, 4082668526457918, 638759164201438766, 99937413499455220346, 15635820994590324604534, 2446316169346302177277972
OFFSET
1,1
COMMENTS
Column 4 of A207535
LINKS
EXAMPLE
Some solutions for n=4
..1..0..3..2....3..1..1..1....0..2..2..1....1..1..1..3....3..2..2..1
..1..1..0..0....3..3..3..1....1..0..2..1....3..3..2..0....1..2..2..0
..3..1..3..0....3..1..3..3....2..2..1..0....0..2..2..1....1..3..1..3
..1..0..2..3....3..1..1..1....0..3..0..0....3..1..0..2....1..0..3..3
CROSSREFS
Sequence in context: A259015 A207279 A207475 * A200901 A268547 A202319
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 18 2012
STATUS
approved