A232341 Number of 7Xn 0..2 arrays with every 0 next to a 1 and every 1 next to a 2 horizontally or antidiagonally, with no adjacent elements equal

1, 754, 22228, 76630, 2510674, 9298730, 318521414, 1241196022, 41049614014, 168217753216, 5314116600322, 22881089512316, 689018292976294, 3108875283706072, 89394192873266794, 421515136439868122

Offset

1,2

Comments

Row 7 of A232335

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=4
..2..1..2..1....2..1..0..1....2..0..1..2....0..1..0..1....0..1..0..1
..0..1..2..1....2..1..2..0....1..2..1..0....2..1..2..1....2..1..2..1
..0..1..2..1....2..0..1..2....1..2..1..2....0..1..0..2....2..1..2..1
..0..1..0..2....1..2..0..2....1..2..0..1....0..1..0..1....0..1..2..1
..0..2..1..2....0..1..0..1....0..1..2..1....2..1..2..1....2..1..2..1
..1..2..1..2....2..1..2..1....0..1..0..2....2..1..2..1....2..1..2..1
..1..0..1..2....2..1..0..2....2..1..0..2....0..1..0..2....2..1..0..2

Crossrefs

Sequence in context: A252913 A252917 A252918 * A261583 A332879 A256089

Adjacent sequences: A232338 A232339 A232340 * A232342 A232343 A232344

Keyword

nonn

Author

R. H. Hardin, Nov 22 2013

Status

approved