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A298495 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 0
1, 4, 1, 38, 281, 277, 24272, 1377101, 10659243, 4599990391 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A298501.
LINKS
EXAMPLE
Some solutions for n=6
..0..0..0..0..0..0. .0..0..0..1..0..1. .0..1..0..0..0..0. .0..1..0..1..0..0
..1..1..0..0..1..1. .0..0..1..0..0..0. .1..0..0..1..0..0. .0..1..0..1..0..0
..1..1..1..1..1..1. .1..1..1..1..1..0. .1..1..1..1..1..1. .1..1..1..1..1..1
..0..0..0..0..0..0. .0..0..0..0..0..0. .1..0..0..0..0..0. .1..0..0..0..0..0
..1..1..0..0..1..1. .1..1..0..1..0..1. .1..1..1..0..1..1. .1..1..1..0..1..1
..1..1..1..1..1..1. .1..1..1..1..1..0. .0..1..0..1..1..1. .0..1..0..1..1..1
CROSSREFS
Cf. A298501.
Sequence in context: A303987 A297900 A363819 * A193962 A369868 A302441
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 20 2018
STATUS
approved

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Last modified June 18 16:37 EDT 2024. Contains 373482 sequences. (Running on oeis4.)