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A316802 Number of nXn 0..1 arrays with every element unequal to 0, 1, 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0
1, 8, 247, 28248, 12075849, 19261290694, 114545399709628, 2540187335598061548, 210067171005687284366855, 64781669533557315098076107091 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A316808.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0. .0..0..0..0..0
..0..0..0..1..1. .0..0..0..1..0. .0..0..0..0..0. .0..0..0..0..0
..1..0..1..0..1. .1..1..1..1..1. .1..1..1..0..1. .1..0..1..1..0
..0..1..1..1..0. .1..0..0..1..0. .0..1..0..0..0. .0..0..0..1..0
..1..1..0..0..1. .1..0..0..1..0. .0..0..1..0..1. .0..1..1..0..0
CROSSREFS
Cf. A316808.
Sequence in context: A053089 A090241 A242196 * A299648 A219269 A029751
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jul 14 2018
STATUS
approved

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Last modified March 4 09:05 EST 2024. Contains 370528 sequences. (Running on oeis4.)