A222474 Number of nX3 0..3 arrays with no more than floor(nX3/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..3 order

1, 1, 5, 42, 45, 1582, 2953, 104833, 179105, 6910335, 12297363, 463356818, 842066129, 31086653839, 57898183793, 2088249634569, 3984107937241, 140397984424512, 274405097987979, 9447509884713957, 18914117934834161

Offset

1,3

Comments

Column 3 of A222479

Links

R. H. Hardin, Table of n, a(n) for n = 1..208

Example

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

Crossrefs

Sequence in context: A145008 A216610 A025173 * A327269 A266021 A062021

Adjacent sequences: A222471 A222472 A222473 * A222475 A222476 A222477

Keyword

nonn

Author

R. H. Hardin Feb 21 2013

Status

approved