|
|
A223013
|
|
Number of 2Xn 0..1 arrays with no more than floor(2Xn/2) elements unequal to at least one horizontal or antidiagonal neighbor, with new values introduced in row major 0..1 order
|
|
1
|
|
|
2, 4, 7, 18, 41, 119, 295, 825, 2060, 5873, 15234, 42492, 111787, 313666, 836575, 2327389, 6276477, 17477473, 47431027, 131755956, 359950638, 999799707, 2741682652, 7613006585, 20955577878, 58193926348, 160583108286, 446091089120
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
All solutions for n=3
..0..0..0....0..0..1....0..1..1....0..0..0....0..0..0....0..0..0....0..0..1
..0..0..1....0..0..0....1..1..1....0..0..0....1..0..0....0..1..1....1..1..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|