|
|
A304264
|
|
Number of n X n 0..1 arrays with every element unequal to 0, 1, 5 or 8 king-move adjacent elements, with upper left element zero.
|
|
1
|
|
|
1, 1, 6, 21, 146, 1246, 13767, 252509, 5755625, 177353720, 8354131403, 523250794396, 44173651472383, 5428616779817049, 920678621074132173, 212277158481925445968, 69198443091508695982216
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=5
..0..0..1..0..0. .0..0..0..1..0. .0..0..0..0..0. .0..0..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..0..0..0. .0..0..0..0..0. .1..0..0..0..0. .0..0..0..0..0
..0..0..0..1..0. .0..0..0..0..1. .0..0..0..0..1. .1..0..0..0..0
..0..0..0..0..0. .0..1..0..0..0. .0..0..0..0..0. .0..0..0..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|