|
|
A281887
|
|
Number of nX7 0..1 arrays with no element equal to more than four of its king-move neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.
|
|
1
|
|
|
0, 0, 241209, 13907664, 663476572, 29340232714, 1239784258612, 50762954675186, 2032908127837419, 80080573259154704, 3113883115269131234, 119819798899454537026, 4571113264552325706845, 173137719486843965997050
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,3
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=3
..0..1..1..1..0..1..0. .0..1..1..1..1..0..0. .0..0..0..0..1..0..0
..0..0..0..0..0..1..1. .0..0..0..0..0..0..0. .0..1..1..1..1..1..0
..1..0..0..1..1..0..0. .0..1..1..1..0..1..0. .1..0..0..1..0..1..0
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|