|
|
A302669
|
|
Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
|
|
1
|
|
|
8, 1934, 15569, 251254, 3204956, 46360666, 637088915, 8880747825, 123521424862, 1717557375519, 23910961429217, 332517383714540, 4627380566545690, 64369973050145418, 895641924918067374, 12460311385203779872
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=5
..0..0..0..1..0..0..0. .0..1..1..1..1..1..0. .0..0..0..1..0..0..0
..0..1..1..0..1..1..0. .0..0..0..1..0..0..1. .0..1..1..1..0..1..1
..1..0..1..1..1..0..0. .1..1..1..1..0..1..1. .0..0..1..0..0..1..1
..0..0..1..0..1..1..0. .0..0..1..0..0..0..1. .0..0..1..0..1..1..0
..0..0..0..1..0..0..0. .0..0..0..1..1..1..0. .0..0..1..1..0..0..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|