|
|
A281538
|
|
Number of nX6 0..2 arrays with no element equal to more than one of its king-move neighbors, with the exception of exactly two elements, and with new values introduced in order 0 sequentially upwards.
|
|
1
|
|
|
9, 3056, 63840, 146956, 290073, 560972, 1066920, 2001002, 3797780, 7294930, 13957058, 26289482, 48689121, 88983896, 161189818, 290577490, 522149018, 935543592, 1669547078, 2965851310, 5243956096, 9233806648, 16204912228
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..0..1..0..1..2..0. .0..0..1..1..2..1. .0..1..2..0..2..1. .0..1..0..2..2..1
..0..2..2..1..2..1. .1..2..2..0..2..0. .2..0..1..0..1..0. .0..2..0..1..0..0
..0..1..0..0..2..0. .1..0..1..1..2..1. .2..0..2..0..2..0. .2..1..0..1..2..1
..2..1..2..1..1..0. .2..0..2..0..0..2. .1..1..2..1..1..2. .0..1..2..0..2..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|