A223470 Number of nX4 0..2 arrays with no more than floor(nX4/2) elements equal to at least one king-move neighbor, with new values introduced in row major 0..2 order

10, 58, 522, 1341, 6708, 15374, 61477, 142610, 503050, 1229381, 4007618, 10383806, 32253501, 87752662, 265341502, 747479421, 2231002754, 6428099474, 19090887233, 55776955238, 165509837454, 487703210601, 1448557505782, 4291268460250

Offset

1,1

Comments

Column 4 of A223473

Links

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

Example

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

Crossrefs

Sequence in context: A321112 A126730 A126478 * A044148 A044529 A129330

Adjacent sequences: A223467 A223468 A223469 * A223471 A223472 A223473

Keyword

nonn

Author

R. H. Hardin Mar 20 2013

Status

approved