A232301 Number of 7Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally

1, 40867, 43963319, 30690409685, 24797475083765, 20843967523877175, 17291702408190208843, 14309005468246109828087, 11852395942038473338742213, 9819088600464792990304624339, 8134045894315455725212916395019

Offset

1,2

Comments

Row 7 of A232295

Links

R. H. Hardin, Table of n, a(n) for n = 1..77

Example

Some solutions for n=2
..2..1....0..1....1..2....2..0....1..2....1..2....1..2....1..2....2..2....2..0
..2..2....2..2....2..1....1..2....1..1....0..1....1..2....2..1....2..0....1..2
..2..1....1..1....0..0....1..2....2..1....2..1....2..2....2..2....1..2....1..2
..2..2....2..1....1..2....1..1....2..2....2..2....2..2....2..1....2..1....1..1
..1..2....2..2....2..2....2..1....2..2....2..1....0..1....0..1....2..2....2..1
..2..1....2..1....1..2....2..2....2..2....1..2....2..1....2..2....1..1....0..2
..2..2....0..2....1..0....2..2....2..2....2..1....1..2....2..2....2..2....1..2

Crossrefs

Sequence in context: A046180 A031668 A164648 * A212080 A097479 A337889

Adjacent sequences: A232298 A232299 A232300 * A232302 A232303 A232304

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved