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A303618 Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0
1, 2, 38, 325, 37910, 6446485, 6323564388, 18955122420980, 214926958781186214 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A303624.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..0. .0..0..0..0..0. .0..0..0..1..1. .0..1..1..1..0
..0..0..0..1..1. .0..0..1..0..0. .0..0..1..1..1. .1..1..0..1..1
..1..0..0..0..1. .1..0..1..0..0. .1..0..1..1..1. .1..1..1..1..0
..0..0..0..1..1. .0..0..0..0..0. .0..0..1..1..1. .0..0..0..1..1
..0..0..1..1..0. .0..0..1..0..1. .0..0..0..1..0. .1..0..1..1..1
CROSSREFS
Cf. A303624.
Sequence in context: A214909 A226402 A217214 * A179503 A126731 A216357
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 27 2018
STATUS
approved

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Last modified July 22 06:32 EDT 2024. Contains 374481 sequences. (Running on oeis4.)