A222324 Number of nX4 0..1 arrays with exactly floor(nX4/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order

3, 7, 19, 52, 165, 835, 3307, 14419, 66213, 302731, 1350601, 6283864, 28864821, 132830017, 617677553, 2862431936, 13363660417, 62171655121, 291908874951, 1362607426103, 6418589261153, 30080186463929, 142028701850239

Offset

1,1

Comments

Column 4 of A222328

Links

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

Example

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

Crossrefs

Sequence in context: A320734 A259812 A115254 * A007180 A090378 A059506

Adjacent sequences: A222321 A222322 A222323 * A222325 A222326 A222327

Keyword

nonn

Author

R. H. Hardin Feb 15 2013

Status

approved