login
A222284
Number of nX2 0..1 arrays with exactly floor(nX2/2) elements unequal to at least one horizontal or vertical neighbor, with new values introduced in row major 0..1 order
2
0, 0, 4, 11, 8, 44, 144, 352, 692, 2488, 6476, 17095, 43308, 131488, 340000, 939959, 2520616, 7194232, 19142160, 53471296, 145636612, 407743540, 1107902624, 3092203004, 8488056840, 23644607144, 64986279340, 181063135999, 499746197884
OFFSET
1,3
COMMENTS
Column 2 of A222290
LINKS
EXAMPLE
Some solutions for n=4
..0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0....0..0
..0..0....1..0....0..1....0..0....1..1....0..0....1..0....0..1....0..0....0..0
..1..1....0..0....0..0....1..0....1..1....0..0....1..1....1..1....0..1....0..1
..1..1....0..0....0..0....0..0....1..1....1..1....1..1....1..1....1..1....0..0
CROSSREFS
Sequence in context: A205136 A096735 A211458 * A330683 A020949 A210693
KEYWORD
nonn
AUTHOR
R. H. Hardin Feb 14 2013
STATUS
approved