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A230804 Number of nX6 0..3 arrays x(i,j) with each element horizontally or vertically 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, and upper left element zero 0
0, 154, 1546, 183088, 6832578, 485186602, 25669880656, 1576356652138, 90342705475634, 5358270247598784, 312733245050099786 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 6 of A230805

LINKS

Table of n, a(n) for n=1..11.

EXAMPLE

Some solutions for n=4

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

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

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

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

CROSSREFS

Sequence in context: A250626 A235107 A235100 * A200552 A160854 A159639

Adjacent sequences:  A230801 A230802 A230803 * A230805 A230806 A230807

KEYWORD

nonn

AUTHOR

R. H. Hardin, Oct 30 2013

STATUS

approved

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Last modified January 16 00:05 EST 2021. Contains 340195 sequences. (Running on oeis4.)