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A305960
Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.
1
8, 5824, 264680, 17617201, 1088558635, 68109190612, 4251930563544, 265585355341963, 16586555684575766, 1035918306523085734, 64698106959674584155, 4040715102616009846706, 252362495353182410193096
OFFSET
1,1
COMMENTS
Column 7 of A305961.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..1..0..0. .0..0..1..0..1..0..1. .0..0..1..0..1..0..1
..0..1..0..0..1..0..1. .0..1..0..1..0..1..1. .0..1..0..1..0..1..1
..0..0..0..1..0..1..1. .0..0..0..0..1..0..0. .0..0..0..0..1..1..0
..0..0..0..0..0..0..0. .0..0..0..0..1..0..0. .0..0..0..1..0..1..0
..0..1..0..0..1..1..0. .0..1..0..1..1..1..1. .0..1..0..1..1..1..1
CROSSREFS
Cf. A305961.
Sequence in context: A052497 A304426 A316281 * A317221 A305691 A317071
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 15 2018
STATUS
approved