A222483 Number of nX3 0..2 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..2 order

0, 4, 6, 85, 365, 3696, 14928, 159062, 645704, 7158232, 28604092, 328610072, 1296477288, 15279837312, 59712212872, 716028671796, 2782912936084, 33742870102928, 130808705085792, 1597212351282064, 6187399238975776

Offset

1,2

Comments

Column 3 of A222488

Links

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

Example

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

Crossrefs

Sequence in context: A196814 A213335 A101138 * A245011 A012897 A013079

Adjacent sequences: A222480 A222481 A222482 * A222484 A222485 A222486

Keyword

nonn

Author

R. H. Hardin Feb 22 2013

Status

approved