|
|
A183789
|
|
Half the number of (n+1)X7 0..2 arrays with no 2X2 subblock having sum 4
|
|
1
|
|
|
503676, 253372446, 124516635830, 61615880574766, 30424632455651757, 15033760617564577257, 7426828822889981226524, 3669246745844998053514738, 1812745552132801952938026578, 895574493615900816704817147361
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for 3X7
..0..0..0..0..0..0..1....0..0..0..0..0..0..0....0..0..0..0..0..1..2
..0..0..0..0..0..0..1....0..0..0..0..0..1..0....0..0..0..0..0..1..1
..2..1..0..1..0..0..0....2..1..0..1..2..0..0....2..1..1..2..1..0..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|