login
A222628
Number of n X n 0..1 arrays with no more than floor(n X n/2) elements unequal to at least one horizontal, vertical or antidiagonal neighbor, with new values introduced in row major 0..1 order
0
1, 1, 5, 161, 3200, 314146, 34323408, 16813884210, 8503001699073, 19277280866911336
OFFSET
1,3
COMMENTS
Diagonal of A222635
EXAMPLE
All solutions for n=3
..0..0..1....0..0..0....0..0..0....0..1..1....0..0..0
..0..0..0....0..0..0....0..0..0....1..1..1....0..0..0
..0..0..0....1..0..0....0..0..0....1..1..1....0..0..1
CROSSREFS
Sequence in context: A197310 A266525 A085330 * A287032 A136368 A229163
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 26 2013
STATUS
approved