|
|
A318080
|
|
Number of nX6 0..1 arrays with every element unequal to 0, 1, 3 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
|
|
1
|
|
|
13, 18, 32, 64, 126, 314, 699, 1778, 4262, 10254, 25322, 63395, 158636, 392649, 973186, 2419617, 6047372, 15095553, 37607858, 93596239, 233272071, 581969505, 1451785788, 3618976256, 9020094130, 22487625577, 56080370254, 139848730677
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=5
..0..0..0..0..1..1. .0..0..1..0..0..1. .0..1..1..1..1..0. .0..0..0..1..0..0
..0..0..0..0..0..1. .1..1..0..0..0..0. .0..0..1..1..1..1. .0..1..1..0..0..0
..0..0..0..0..0..0. .0..1..0..0..0..0. .0..0..0..1..1..1. .0..0..1..0..0..0
..0..0..0..1..1..1. .0..0..0..0..0..0. .1..1..1..1..1..1. .0..0..0..0..0..0
..0..1..1..1..0..0. .0..0..0..0..0..0. .0..1..1..1..1..1. .0..0..0..0..0..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|