|
|
A305180
|
|
Number of n X 6 0..1 arrays with every element unequal to 1, 2, 5, 6 or 7 king-move adjacent elements, with upper left element zero.
|
|
1
|
|
|
5, 5, 29, 47, 137, 473, 836, 2109, 6105, 13157, 29710, 79848, 188417, 434271, 1083668, 2642078, 6258979, 15110414, 36879475, 88992860, 213051063, 516545526, 1254485401, 3011010117, 7264255595, 17633081795, 42495939909, 102388465505
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=5
..0..1..1..1..1..0. .0..1..1..1..1..0. .0..1..1..1..0..1. .0..1..0..0..1..0
..1..0..1..1..0..1. .1..0..1..1..0..1. .1..0..1..1..1..1. .0..0..0..0..0..0
..1..1..1..1..1..1. .1..1..1..1..1..1. .1..1..0..1..1..0. .0..0..0..0..1..0
..0..1..1..1..0..1. .0..1..1..1..1..0. .1..1..1..1..1..1. .0..1..0..1..0..1
..1..1..0..1..1..0. .1..1..1..0..1..1. .1..0..1..1..0..1. .1..0..0..0..1..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|