|
|
A268103
|
|
T(n,k)=Number of nXk 0..k arrays with every repeated value in every row and column greater than or equal to the previous repeated value.
|
|
5
|
|
|
2, 9, 4, 64, 81, 8, 615, 4096, 729, 15, 7536, 378225, 262144, 6084, 28, 112476, 56791296, 232608375, 15625000, 49284, 51, 1981512, 12650850576, 427979206656, 134114290153, 895841344, 386884, 92, 40265487, 3926389806144
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Table starts
..2.....9........64............615.................7536................112476
..4....81......4096.........378225.............56791296...........12650850576
..8...729....262144......232608375.........427979206656......1422917069386176
.15..6084..15625000...134114290153.....3042807800530752.151823094341278467866
.28.49284.895841344.74223748225767.20777755411841736998
|
|
LINKS
|
|
|
FORMULA
|
Empirical for column k:
k=1: a(n) = 2*a(n-1) +a(n-2) -2*a(n-3) -a(n-4)
k=2: [order 15]
k=3: [order 40]
|
|
EXAMPLE
|
Some solutions for n=5 k=4
..0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..0
..0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..0....0..0..0..1
..0..0..0..1....0..0..0..1....0..0..0..2....0..0..0..3....0..0..0..0
..0..0..0..0....0..0..3..0....0..0..0..4....0..0..1..0....0..0..1..3
..1..1..1..1....0..1..0..4....4..0..1..4....3..4..0..1....4..1..0..4
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|