|
|
A213697
|
|
T(n,k)=Half the number of (n+1)X(n+1) symmetric 0..k arrays with no 2X2 subblock summing to 2k
|
|
14
|
|
|
3, 11, 13, 28, 192, 70, 56, 1320, 7827, 529, 99, 5470, 208072, 750261, 5148, 159, 17499, 2322599, 109820000, 168382284, 68798, 240, 45892, 16537086, 4286833981, 193946752094, 88681187619, 1220409, 344, 105856, 84059234, 83545858925
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Table starts
.....3..........11...............28..................56....................99
....13.........192.............1320................5470.................17499
....70........7827...........208072.............2322599..............16537086
...529......750261........109820000..........4286833981...........83545858925
..5148...168382284.....193946752094......34389632236877......2256314178023600
.68798.88681187619.1146407046198040.1199143411128185584.325754552781442854792
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4 k=4
..0..4..0..2..3....1..2..4..4..0....2..4..3..3..2....3..4..3..1..2
..4..2..0..3..3....2..1..3..4..1....4..2..3..3..1....4..2..2..1..0
..0..0..4..3..1....4..3..2..1..0....3..3..2..2..3....3..2..3..4..2
..2..3..3..2..0....4..4..1..0..0....3..3..2..3..2....1..1..4..2..4
..3..3..1..0..4....0..1..0..0..4....2..1..3..2..2....2..0..2..4..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|