A223029 Number of nX3 0..2 arrays with exactly floor(nX3/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

0, 16, 45, 472, 820, 11680, 18827, 297604, 476311, 7843888, 12556560, 211494138, 338708227, 5790393968, 9275590871, 160276206184, 256779939554, 4473065113116, 7166908112488, 125642042785400, 201318319254692, 3547402024390848

Offset

1,2

Comments

Column 3 of A223033

Links

R. H. Hardin, Table of n, a(n) for n = 1..174

Example

Some solutions for n=3
..0..1..2....0..1..1....0..1..0....0..1..0....0..1..0....0..1..2....0..1..2
..2..1..1....2..1..2....1..1..2....2..1..2....2..2..2....0..0..0....1..1..1
..1..0..2....0..1..0....0..1..0....0..1..1....2..1..0....2..1..2....0..2..0

Crossrefs

Sequence in context: A322343 A345754 A318093 * A244343 A235772 A235555

Adjacent sequences: A223026 A223027 A223028 * A223030 A223031 A223032

Keyword

nonn

Author

R. H. Hardin Mar 12 2013

Status

approved