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A198641 Number of 2nX8 0..2 arrays with values 0..2 introduced in row major order and each element equal to an even number of horizontal and vertical neighbors 0
3936, 10937316, 30189380016, 83436203795656, 230598746057340176 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 4 of A198642

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

Some solutions for n=2

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

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

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

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

CROSSREFS

Sequence in context: A031822 A288894 A289563 * A045232 A252455 A233688

Adjacent sequences:  A198638 A198639 A198640 * A198642 A198643 A198644

KEYWORD

nonn

AUTHOR

R. H. Hardin Oct 27 2011

STATUS

approved

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Last modified December 5 14:32 EST 2021. Contains 349557 sequences. (Running on oeis4.)