login
A301441
Number of nX6 0..1 arrays with every element equal to 0, 1, 2, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
32, 2048, 92616, 4543028, 221935656, 10857946336, 531234388944, 25991845818768, 1271713349901092, 62221668107160068, 3044346718455863936, 148952083612786733972, 7287843773772911675576, 356575521527705498523804
OFFSET
1,1
COMMENTS
Column 6 of A301443.
FORMULA
Empirical recurrence of order 97 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..1..1..0..1. .0..0..0..1..0..0. .0..0..1..0..1..1. .0..0..1..1..0..0
..0..0..1..0..0..0. .0..0..0..1..0..1. .0..0..1..1..1..1. .0..0..1..1..0..1
..0..0..1..0..1..0. .0..0..0..1..0..1. .0..0..1..0..0..1. .0..0..1..0..0..0
..0..0..1..1..0..1. .0..0..1..1..0..0. .0..0..0..1..0..1. .0..0..0..1..0..1
..0..0..1..0..1..0. .0..1..1..1..1..0. .0..1..0..0..0..1. .0..1..0..0..1..0
CROSSREFS
Cf. A301443.
Sequence in context: A300802 A303454 A303460 * A302013 A302008 A301782
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 21 2018
STATUS
approved