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A302814 Number of n X n 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 0
1, 8, 75, 1494, 57684, 5520999, 1135257814, 402121386052, 303834035008015 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Diagonal of A302820.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..1..0..0. .0..1..0..1..0. .0..1..0..1..0. .0..1..0..1..1
..0..0..1..0..1. .0..1..0..1..1. .1..1..1..1..1. .0..0..1..0..0
..1..1..1..0..1. .0..0..0..0..1. .0..0..0..0..0. .0..0..1..0..1
..1..0..1..0..1. .1..1..0..1..0. .0..1..0..1..0. .1..1..1..1..1
..1..0..1..1..1. .0..1..1..1..0. .1..1..1..1..1. .1..0..0..0..0
CROSSREFS
Cf. A302820.
Sequence in context: A071720 A273998 A111685 * A088376 A096293 A355049
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 13 2018
STATUS
approved

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Last modified June 21 21:50 EDT 2024. Contains 373559 sequences. (Running on oeis4.)