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A301324 Number of n X n 0..1 arrays with every element equal to 0, 2, 3, 5 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 0
1, 3, 7, 45, 664, 17491, 1127238, 135428462, 34057380439, 17040140705965 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A301330.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..1..1. .0..0..1..1..1. .0..0..0..0..0. .0..0..1..1..1
..0..1..0..1..0. .0..1..0..1..1. .0..1..0..1..0. .0..1..0..0..1
..0..1..1..0..0. .0..1..1..1..0. .1..1..1..1..0. .0..1..0..1..1
..0..0..0..1..1. .0..0..0..0..0. .1..1..1..0..0. .0..1..1..0..0
..1..0..1..1..0. .0..1..0..0..1. .0..1..1..0..1. .0..0..0..0..1
CROSSREFS
Cf. A301330.
Sequence in context: A041016 A351354 A365572 * A184339 A294915 A003758
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 18 2018
STATUS
approved

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Last modified July 24 15:34 EDT 2024. Contains 374584 sequences. (Running on oeis4.)