A222397 Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..2 order

0, 0, 4, 35, 0, 624, 900, 21634, 21224, 609872, 756664, 18326048, 23970800, 543783008, 781519168, 16285754632, 25251222240, 489217824832, 816430181216, 14763821943024, 26347993000448, 447331602311680, 849299259827904

Offset

1,3

Comments

Column 3 of A222402

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A113231 A055621 A000860 * A334257 A193994 A097382

Adjacent sequences: A222394 A222395 A222396 * A222398 A222399 A222400

Keyword

nonn

Author

R. H. Hardin Feb 18 2013

Status

approved