|
|
A207012
|
|
Number of nX5 0..2 arrays avoiding the patterns z z+1 z or z z-1 z in any row or column
|
|
1
|
|
|
161, 25921, 2113177, 201211481, 18649387825, 1728683700481, 159875651653873, 14795926235823289, 1369847551748709409, 126829825504268255401, 11741934236951875788449, 1087038686482232263036985
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4
..2..1..0..2..2....0..0..2..1..0....1..2..2..1..0....0..0..2..0..0
..0..0..2..1..0....0..1..2..0..2....0..1..1..2..2....2..2..2..1..1
..1..2..0..0..0....2..1..0..2..0....2..0..1..2..0....0..2..2..1..1
..2..2..2..0..2....1..2..2..2..1....1..2..2..0..2....0..1..2..0..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|