|
|
A233488
|
|
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no increasing sequence of length 3 horizontally, diagonally downwards or vertically
|
|
6
|
|
|
172952, 8254896, 8254896, 386906152, 1328621536, 386906152, 18116531520, 208066125583, 208066125583, 18116531520, 846914338316, 32519299606118, 107592918949238, 32519299606118, 846914338316, 39587056212137
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Table starts
.......172952..........8254896............386906152..............18116531520
......8254896.......1328621536.........208066125583...........32519299606118
....386906152.....208066125583......107592918949238........55442546308058920
..18116531520...32519299606118....55442546308058920.....94038386779753884364
.846914338316.5070020645309648.28457838067515915868.158651203925316697808911
|
|
LINKS
|
|
|
FORMULA
|
Empirical for column k:
k=1: [linear recurrence of order 60]
|
|
EXAMPLE
|
Some solutions for n=1 k=4
..1..1..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0....0..0..0..0..0..0
..2..1..0..0..0..0....2..3..0..0..0..0....2..0..0..0..0..0....2..0..0..0..0..0
..2..1..3..3..1..1....2..3..2..3..2..3....0..3..2..2..0..0....2..3..1..3..2..2
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|