A209795 Half the number of (n+1)X8 0..2 arrays with every 2X2 subblock having exactly one duplicate clockwise edge difference

2902980, 2819342124, 2710658447034, 2613436161921981, 2518750352620857312, 2427793108137633168210, 2340066952652845862645106, 2255530912287027117930612162, 2174043398490162505254364682718

Offset

1,1

Comments

Column 7 of A209796

Links

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

Example

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

Crossrefs

Sequence in context: A101768 A101769 A237210 * A246054 A251247 A205292

Adjacent sequences: A209792 A209793 A209794 * A209796 A209797 A209798

Keyword

nonn

Author

R. H. Hardin Mar 13 2012

Status

approved