A222322 Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one king-move neighbor, with new values introduced in row major 0..1 order

0, 0, 0, 7, 0, 32, 0, 168, 0, 948, 0, 5279, 0, 29868, 0, 170435, 0, 978324, 0, 5646204, 0, 32726780, 0, 190380464, 0, 1110922620, 0, 6499777527, 0, 38116781580, 0, 223982494824, 0, 1318530693372, 0, 7774269747257, 0, 45903969026388, 0

Offset

1,4

Comments

Column 2 of A222328

Links

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

Example

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

Crossrefs

Sequence in context: A280143 A280144 A157779 * A228762 A352078 A046273

Adjacent sequences: A222319 A222320 A222321 * A222323 A222324 A222325

Keyword

nonn

Author

R. H. Hardin Feb 15 2013

Status

approved