A223030 Number of nX4 0..2 arrays with exactly floor(nX4/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

6, 58, 472, 1341, 6472, 15374, 60497, 142610, 499278, 1229381, 3993742, 10383806, 32203849, 87752662, 265166874, 747479421, 2230395230, 6428099474, 19088788221, 55776955238, 165502617034, 487703210601, 1448532737138, 4291268460250

Offset

1,1

Comments

Column 4 of A223033

Links

R. H. Hardin, Table of n, a(n) for n = 1..83

Example

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

Crossrefs

Sequence in context: A197543 A184708 A004301 * A292574 A354228 A073848

Adjacent sequences: A223027 A223028 A223029 * A223031 A223032 A223033

Keyword

nonn

Author

R. H. Hardin Mar 12 2013

Status

approved