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A304354
Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
1
21, 289, 280, 4370, 34887, 445745, 9176798, 160397426, 2593742186, 49371354839, 908899582912, 16074992228393, 295578528424499, 5422250103851024, 98300554690294042, 1794609057854976519, 32811799818799674273
OFFSET
1,1
COMMENTS
Column 7 of A304355.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..1..1. .0..0..1..0..1..0..1. .0..1..0..1..0..1..0
..0..0..1..1..0..1..0. .1..0..1..1..0..1..1. .1..1..0..0..1..0..0
..1..1..1..0..0..1..0. .0..0..1..0..0..1..1. .0..0..1..1..1..0..0
..1..0..0..1..1..0..1. .0..0..1..1..0..1..1. .0..1..0..1..1..0..0
..0..0..0..0..1..0..0. .0..1..0..1..0..1..0. .1..1..0..0..1..0..1
CROSSREFS
Cf. A304355.
Sequence in context: A025971 A346844 A188710 * A305917 A316238 A317159
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 11 2018
STATUS
approved