A222398 Number of nX4 0..2 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order

3, 9, 35, 162, 717, 8803, 55761, 648643, 4706538, 56003424, 406023424, 4784210119, 35733523091, 409997141918, 3135766366849, 35275686696609, 275409726982013, 3040622473638517, 24210569242226366, 262678073944123860

Offset

1,1

Comments

Column 4 of A222402

Links

R. H. Hardin, Table of n, a(n) for n = 1..131

Example

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

Crossrefs

Sequence in context: A338793 A370341 A101880 * A107894 A155858 A000834

Adjacent sequences: A222395 A222396 A222397 * A222399 A222400 A222401

Keyword

nonn

Author

R. H. Hardin Feb 18 2013

Status

approved