|
| |
|
|
A236993
|
|
Number of (n+1)X(4+1) 0..2 arrays with the maximum plus the lower median minus the upper median minus the minimum of every 2X2 subblock differing from its horizontal and vertical neighbors by exactly one
|
|
1
|
|
|
|
7200, 104976, 1513728, 23825664, 363916800, 5454273024, 80675315712, 1304215105536, 20389194547200, 312112856088576, 4707004466331648, 77333727580913664, 1227558957731020800, 19065730298005684224
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
FORMULA
|
Empirical: a(n) = 158112*a(n-4) -7941224448*a(n-8) +124128835928064*a(n-12)
|
|
|
EXAMPLE
|
Some solutions for n=2
..1..0..0..1..0....2..0..2..1..0....0..0..1..1..1....0..0..2..0..0
..0..2..0..0..1....2..0..1..0..0....2..0..2..0..1....2..0..1..1..0
..1..1..0..0..0....2..1..0..0..0....1..2..2..1..2....0..1..2..1..0
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
