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A316539 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 4, 7 or 8 king-move adjacent elements, with upper left element zero. 0
1, 4, 26, 136, 4219, 114514, 5074646, 681913008, 140688693646, 48442426003864, 36951311160860211 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A316545.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1. .0..0..0..0..1. .0..1..1..0..0. .0..1..0..0..0
..0..0..0..0..0. .0..0..0..1..0. .0..0..0..0..0. .0..1..0..0..0
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..1..0..1. .0..0..0..1..0. .1..1..0..1..0. .1..0..0..1..0
..0..0..1..0..1. .1..1..0..0..0. .1..1..1..0..0. .1..0..0..1..0
CROSSREFS
Cf. A316545.
Sequence in context: A058408 A053906 A359962 * A197964 A100236 A229278
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 06 2018
STATUS
approved

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Last modified February 21 22:50 EST 2024. Contains 370239 sequences. (Running on oeis4.)