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A299129 Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero. 0
1, 5, 30, 1261, 130924, 54173918, 83518793627, 421314290752028, 7208059773839169432 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A299135.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..1. .0..0..0..1..1. .0..0..0..0..0. .0..0..1..0..0
..0..0..1..0..0. .0..1..0..0..1. .0..1..1..0..0. .0..1..1..0..1
..1..1..0..1..0. .1..1..1..1..0. .1..1..1..0..1. .0..0..0..1..1
..0..1..1..1..1. .0..0..1..0..0. .1..1..1..0..0. .0..1..1..0..0
..0..0..1..0..1. .0..0..0..0..0. .0..1..1..0..0. .0..0..1..0..1
CROSSREFS
Cf. A299135.
Sequence in context: A264861 A264864 A297472 * A255677 A256153 A238196
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 03 2018
STATUS
approved

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Last modified March 28 20:05 EDT 2024. Contains 371254 sequences. (Running on oeis4.)