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A304675 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero. 1
1, 99, 337, 1950, 15544, 122388, 930123, 7208807, 57718628, 454436233, 3581807203, 28420290247, 224930626941, 1779684725816, 14093442393516, 111612618187501, 883726663910560, 6997730121295655, 55415998410956365, 438827776201228283 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A304676.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0..1. .0..1..1..1..1..1..0. .0..0..0..0..1..1..0
..1..1..1..0..1..1..0. .1..1..0..0..0..0..1. .1..1..0..1..0..1..0
..1..1..1..0..0..1..0. .0..0..0..1..1..0..1. .1..0..0..1..0..0..0
..0..0..1..1..0..1..0. .0..0..1..0..0..1..1. .0..1..1..0..1..1..0
..1..0..0..0..1..1..0. .0..0..1..1..1..1..0. .0..1..0..0..0..1..0
CROSSREFS
Cf. A304676.
Sequence in context: A008882 A156757 A027579 * A316122 A157659 A273187
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 16 2018
STATUS
approved

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Last modified July 20 07:46 EDT 2024. Contains 374442 sequences. (Running on oeis4.)