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A304426
Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
1
8, 5824, 210954, 11085965, 536823135, 26510744474, 1305482386171, 64363459841666, 3173399640697899, 156482480979101412, 7716615213172103411, 380537936646809324687, 18766124693821831394655, 925451422109734164136747
OFFSET
1,1
COMMENTS
Column 7 of A304427.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..1..1..0. .0..1..0..1..0..0..0. .0..1..0..1..0..0..1
..0..0..0..0..0..0..1. .0..0..0..1..0..0..1. .0..0..0..0..0..0..1
..0..0..1..1..1..0..0. .0..0..1..1..0..0..0. .0..0..1..1..0..1..0
..0..1..1..1..0..1..1. .0..1..1..1..1..0..1. .0..1..1..1..1..1..1
..0..0..1..0..0..0..1. .0..0..1..0..1..1..1. .0..0..1..0..0..1..0
CROSSREFS
Cf. A304427.
Sequence in context: A178329 A062030 A052497 * A316281 A305960 A317221
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 12 2018
STATUS
approved