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A230829 Number of nX6 0..3 arrays x(i,j) with each element horizontally, vertically or antidiagonally next to at least one element with value (x(i,j)+1) mod 4 and at least one element with value (x(i,j)-1) mod 4, no adjacent elements equal, and upper left element zero 1
0, 44, 130, 734, 4350, 29446, 201592, 1388526, 9649244, 67351066, 471449136, 3305467604, 23199674400, 162919918906, 1144420036726, 8039945941588, 56486945293530, 396878171736174, 2788524347614420, 19592806908395710 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A230831

LINKS

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

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A044676 A253327 A253320 * A183642 A183634 A043506

Adjacent sequences:  A230826 A230827 A230828 * A230830 A230831 A230832

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 30 2013

STATUS

approved

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Last modified August 15 23:32 EDT 2022. Contains 356150 sequences. (Running on oeis4.)