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A298455 Number of n X n 0..1 arrays with every element equal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero. 0
0, 1, 8, 219, 35980, 19100497, 39291988976, 290849365371077, 7804886774633048676 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
COMMENTS
Diagonal of A298461.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..1. .0..0..0..1..1. .0..0..1..1..0. .0..0..0..0..0
..0..1..0..0..1. .0..1..1..0..1. .0..1..1..0..0. .1..0..1..1..0
..0..1..1..0..1. .1..0..1..1..0. .1..1..0..1..0. .1..1..1..1..0
..1..0..1..1..0. .1..0..0..0..1. .0..0..1..1..1. .0..0..1..0..0
..1..1..0..0..0. .1..1..1..1..1. .0..1..1..1..1. .0..1..1..1..0
CROSSREFS
Cf. A298461.
Sequence in context: A232157 A305517 A298964 * A055350 A183261 A316954
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 19 2018
STATUS
approved

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Last modified June 17 21:09 EDT 2024. Contains 373464 sequences. (Running on oeis4.)