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A205245 Number of (n+1)X8 0..2 arrays with the number of rightwards and downwards edge increases in each 2X2 subblock differing from the number in each of its horizontal and vertical neighbors 0
4143102, 225349124, 18384097800, 1253758820754, 98979850888752, 7109556887269900, 555164681243665142 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A205246

LINKS

Table of n, a(n) for n=1..7.

EXAMPLE

Some solutions for n=4

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

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

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

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

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

CROSSREFS

Sequence in context: A333376 A230755 A204151 * A237174 A345627 A346345

Adjacent sequences:  A205242 A205243 A205244 * A205246 A205247 A205248

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved

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Last modified July 25 09:18 EDT 2021. Contains 346286 sequences. (Running on oeis4.)