|
|
A187422
|
|
Number of (n+1)X5 0..2 arrays with every 2X2 subblock determinant equal to exactly one or two horizontal and vertical neighbor 2X2 subblock determinants
|
|
5
|
|
|
3593, 44512, 602024, 10014852, 139898890, 2183222530, 33876667824, 532183243177, 8196134675647, 127027583294006, 1971647634788057, 30657997754787486, 475925414500334404, 7389192788201124449
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for 3X5
..0..0..2..2..2....0..1..2..1..1....0..2..1..2..2....0..2..1..2..1
..1..1..1..0..0....2..1..0..0..0....1..2..0..0..0....1..2..0..2..2
..0..0..1..1..1....0..1..2..2..2....0..2..1..1..0....0..2..1..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|