A222583 Number of nX3 0..2 arrays with no more than floor(nX3/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..2 order

1, 5, 9, 112, 426, 4790, 18007, 208768, 783389, 9222742, 34725955, 412489970, 1558983053, 18631988604, 70660866011, 848302913944, 3226795572945, 38872008280152, 148241838020273, 1790674769103638, 6843805534505557

Offset

1,2

Comments

Column 3 of A222587

Links

R. H. Hardin, Table of n, a(n) for n = 1..202

Example

Some solutions for n=3
..0..0..0....0..0..0....0..1..1....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..1....0..0..0....1..1..1....0..0..0....0..0..0....0..0..0....1..0..0
..0..0..0....0..0..0....1..1..1....0..0..1....0..1..0....1..0..0....0..0..0

Crossrefs

Sequence in context: A329002 A280642 A359396 * A222374 A097397 A092584

Adjacent sequences: A222580 A222581 A222582 * A222584 A222585 A222586

Keyword

nonn

Author

R. H. Hardin Feb 25 2013

Status

approved