|
|
A208466
|
|
T(n,k)=Number of nXk nonnegative integer arrays with new values 0 upwards introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors
|
|
12
|
|
|
1, 2, 2, 5, 15, 5, 15, 198, 203, 15, 52, 4041, 20746, 4140, 52, 203, 113458, 4132120, 4150760, 115975, 203, 877, 4132120, 1358524513, 10318694804, 1366230232, 4213597, 877, 4140, 187612143, 671329819215, 50996571454200, 51074630353994
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,2
|
|
COMMENTS
|
Table starts
....1...........2..................5.....................15
....2..........15................198...................4041
....5.........203..............20746................4132120
...15........4140............4150760............10318694804
...52......115975.........1366230232.........51074630353994
..203.....4213597.......675203938944.....441285917587055633
..877...190899322....470798015742024.6105599904286957450405
.4140.10480142147.442649055938121520
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4 k=3
..0..1..2....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..0..1....0..1..0....0..1..0....0..1..0....0..1..2....0..1..0....0..1..0
..0..0..0....0..0..2....2..0..0....2..0..1....1..1..0....0..2..0....0..0..0
..0..1..0....0..0..0....0..2..0....0..0..0....0..0..0....0..0..0....0..2..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|