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A300261 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 3, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 8, 95, 2030, 138215, 20341795, 6717267728, 6293324571337, 14961844070607631 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A300267.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0. .0..0..0..0..0. .0..0..0..1..0. .0..1..0..0..0
..1..1..1..0..0. .1..0..1..1..0. .1..1..0..0..1. .0..0..0..1..1
..1..0..1..1..0. .1..0..0..0..1. .0..1..1..1..1. .1..1..0..0..1
..0..0..1..1..1. .1..1..0..0..0. .0..1..1..0..1. .0..1..0..0..0
..1..1..1..0..1. .0..1..0..1..0. .0..1..1..0..1. .0..0..1..0..1
CROSSREFS
Cf. A300267.
Sequence in context: A003775 A262737 A299747 * A121785 A305587 A229294
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 01 2018
STATUS
approved

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Last modified March 28 05:39 EDT 2024. Contains 371235 sequences. (Running on oeis4.)