|
| |
|
|
A295050
|
|
Number of nX7 0..1 arrays with each 1 horizontally or vertically adjacent to 0 or 2 1s.
|
|
1
|
|
|
|
34, 747, 14691, 301306, 6171389, 125887202, 2573527520, 52573942625, 1074298644657, 21950201753662, 448510802455457, 9164288736541756, 187252966893295656, 3826106452646843405, 78178286183064352980
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
1,1
|
|
|
COMMENTS
|
|
|
|
LINKS
|
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..0..0..1..0..0..0. .0..0..0..1..0..0..1. .1..0..0..0..1..1..1
..1..0..1..0..0..0..0. .1..0..0..0..0..0..0. .0..0..0..0..1..0..1
..0..0..0..0..1..0..0. .0..0..1..0..1..0..1. .0..1..0..0..1..1..1
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
