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A205608 Number of (n+1)X8 0..3 arrays with every 2X2 subblock having the same number of equal edges as its horizontal neighbors and a different number from its vertical neighbors, and new values 0..3 introduced in row major order 0
698747, 96151010, 15496775389, 2395790751806, 409909278230699, 64469298849716708 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A205609

LINKS

Table of n, a(n) for n=1..6.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A206518 A114676 A319917 * A205439 A027829 A258129

Adjacent sequences:  A205605 A205606 A205607 * A205609 A205610 A205611

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 29 2012

STATUS

approved

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Last modified November 26 21:07 EST 2021. Contains 349344 sequences. (Running on oeis4.)