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A304951
Number of n X 7 0..1 arrays with every element unequal to 0, 2, 3, 5 or 7 king-move adjacent elements, with upper left element zero.
1
1, 99, 120, 287, 1436, 5296, 18950, 76117, 313593, 1223755, 4910872, 20032709, 79956642, 322609167, 1304677522, 5257674436, 21210939485, 85682310404, 345796184542, 1395755609802, 5635920794015, 22752476546255, 91855101525832
OFFSET
1,2
COMMENTS
Column 7 of A304952.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..1..0..0. .0..0..0..1..1..1..1. .0..0..1..1..1..0..1
..1..1..0..0..1..0..0. .1..1..0..1..1..1..1. .0..0..1..1..1..0..0
..0..0..0..1..0..0..0. .1..0..1..1..0..0..0. .0..0..0..0..1..1..0
..0..0..1..0..1..0..0. .0..1..0..1..1..1..0. .0..0..1..0..0..0..1
..0..0..1..1..0..1..1. .1..0..0..1..1..1..0. .1..1..0..0..1..0..1
CROSSREFS
Cf. A304952.
Sequence in context: A372301 A133650 A045298 * A316619 A354500 A039446
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 22 2018
STATUS
approved