A232405 Number of (n+1) X (7+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.

96, 664, 4416, 44528, 370876, 3508240, 31802528, 296151320, 2734362948, 25388000332, 235309598120, 2183618526324, 20255876087096, 187949259401812, 1743794943568232, 16179886188718672, 150123298467390804

Offset

1,1

Comments

Column 7 of A232406.

Links

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

Example

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

Crossrefs

Cf. A232406.

Sequence in context: A233029 A216106 A268795 * A269032 A187610 A269215

Adjacent sequences: A232402 A232403 A232404 * A232406 A232407 A232408

Keyword

nonn

Author

R. H. Hardin, Nov 23 2013

Status

approved