A205245 - OEIS

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

4143102, 225349124, 18384097800, 1253758820754, 98979850888752, 7109556887269900, 555164681243665142

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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: A230755 A204151 A373528 * A366507 A237174 A345627

Adjacent sequences: A205242 A205243 A205244 * A205246 A205247 A205248

KEYWORD

nonn

AUTHOR

R. H. Hardin Jan 24 2012

STATUS

approved