|
|
A218809
|
|
Hilltop maps: number of nX7 binary arrays indicating the locations of corresponding elements not exceeded by any horizontal or antidiagonal neighbor in a random 0..3 nX7 array
|
|
1
|
|
|
113, 15871, 2030789, 259935681, 33267198605, 4257699787069, 544920898689805, 69741601368666737, 8925866282195274093, 1142375383410178607437, 146206707061580643526877, 18712238989313795368235025
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..0..0..1..1..1..0....0..0..1..0..1..0..0....0..0..0..1..0..0..1
..0..1..0..1..0..1..1....0..0..1..1..0..0..1....0..1..1..1..0..0..0
..0..1..0..1..1..1..0....0..0..1..1..0..0..1....0..1..0..1..0..0..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|