A222764 Number of nX3 0..1 arrays with exactly floor(nX3/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order

0, 4, 13, 96, 301, 2242, 7575, 55958, 196442, 1448568, 5188656, 38338122, 138866688, 1029494580, 3754449699, 27929878716, 102325331440, 763577070328, 2806916894109, 21001612120424, 77405327921654, 580452846750048

Offset

1,2

Comments

Column 3 of A222769

Links

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

Example

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

Crossrefs

Sequence in context: A200850 A326565 A041433 * A058014 A290392 A261785

Adjacent sequences: A222761 A222762 A222763 * A222765 A222766 A222767

Keyword

nonn

Author

R. H. Hardin Mar 05 2013

Status

approved