A222518 Number of nX4 0..3 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order

3, 9, 37, 206, 1111, 26513, 221659, 6043652, 56070649, 1573702327, 14644968953, 408818223648, 3869679949709, 106284839137519, 1021535069202511, 27650305434512778, 269672290550777351, 7194730625200174103

Offset

1,1

Comments

Column 4 of A222522

Links

R. H. Hardin, Table of n, a(n) for n = 1..92

Example

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

Crossrefs

Sequence in context: A030803 A300170 A155159 * A107886 A220452 A130407

Adjacent sequences: A222515 A222516 A222517 * A222519 A222520 A222521

Keyword

nonn

Author

R. H. Hardin Feb 23 2013

Status

approved