|
|
A208433
|
|
Number of nX7 0..2 arrays with new values 0..2 introduced in row major order and no element equal to any knight-move neighbor (colorings ignoring permutations of colors)
|
|
1
|
|
|
365, 13824, 15273, 169899, 2623167, 36422648, 509698666, 7308976236, 104548902187, 1491128667703, 21311956695888, 304671374144232, 4354902558505404, 62240469327888568, 889738186413603234
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..0..1..1..1..0....0..0..0..0..1..2..0....0..1..2..0..2..0..2
..2..0..2..0..1..0..2....2..1..2..1..2..1..2....0..1..1..2..0..1..1
..0..1..0..2..0..2..0....1..2..1..2..1..2..1....2..1..2..0..2..0..2
..2..0..2..0..1..0..1....2..1..2..0..2..0..2....0..2..0..2..0..2..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|