login
A320407
Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 4 or 5 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
32, 257, 1970, 18725, 191615, 1957026, 19677729, 199877194, 2025592349, 20591906814, 209152278873, 2125269466703, 21596517936302, 219473499133689, 2230457205782323, 22667637795146693, 230368898318395100
OFFSET
1,1
COMMENTS
Column 6 of A320409.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..0. .0..0..0..1..0..0. .0..1..0..1..1..1. .0..1..0..0..0..0
..0..0..0..0..0..0. .1..0..0..0..0..0. .0..0..0..1..0..1. .0..0..0..0..1..0
..1..0..0..0..0..0. .0..0..0..0..0..1. .0..0..0..0..1..0. .0..1..1..0..1..0
..0..1..1..0..1..1. .0..1..0..0..0..0. .0..0..0..0..0..0. .0..0..0..1..0..0
..0..0..0..0..1..1. .1..0..0..0..0..1. .0..1..0..0..0..0. .1..1..1..0..0..0
CROSSREFS
Cf. A320409.
Sequence in context: A357788 A022327 A318022 * A189651 A145711 A125369
KEYWORD
nonn
AUTHOR
R. H. Hardin, Oct 12 2018
STATUS
approved