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A299122 Number of n X n 0..1 arrays with every element equal to 0, 1, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 0
1, 4, 9, 232, 2636, 198753, 50126162, 17703574257, 28274774976231 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A299128.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..1. .0..1..1..1..0. .0..1..1..1..1. .0..1..1..0..0
..1..0..1..1..1. .0..1..1..1..1. .0..1..1..0..0. .0..1..1..1..1
..0..0..1..0..1. .0..0..1..1..1. .0..0..0..0..0. .0..0..1..0..0
..1..0..0..1..1. .1..0..1..0..1. .1..0..1..1..1. .0..0..1..0..0
..1..0..0..1..1. .0..1..1..1..0. .0..1..1..1..1. .1..1..1..1..1
CROSSREFS
Cf. A299128.
Sequence in context: A318615 A030074 A335723 * A167657 A175700 A035126
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 03 2018
STATUS
approved

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Last modified March 29 06:15 EDT 2024. Contains 371265 sequences. (Running on oeis4.)