|
|
A235260
|
|
Number of (n+1)X(3+1) 0..3 arrays with 2X2 subblock sums lexicographically nondecreasing columnwise and rowwise
|
|
1
|
|
|
22500, 2691067, 417967682, 41170730836, 3998547995093, 282203684810984, 19728773908721866, 1090479569705332324, 59978597869556298802, 2740097672205395658455, 124802366974771368162608
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=1
..1..0..1..2....1..0..3..3....1..1..2..2....1..2..3..2....0..3..2..3
..3..1..3..2....2..3..3..0....3..0..3..3....0..1..3..3....0..0..1..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|