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A300678 Number of nX4 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
1, 10, 11, 28, 80, 245, 729, 2604, 8579, 27943, 95535, 322511, 1083870, 3675083, 12455625, 42129388, 142706185, 483725646, 1638434358, 5551260311, 18812259092, 63741708473, 215983981369, 731885089125, 2480017406380, 8403581958869 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A300682.
LINKS
FORMULA
Empirical recurrence of order 82 (see link above)
EXAMPLE
Some solutions for n=5
..0..0..0..1. .0..1..1..0. .0..0..0..0. .0..0..1..1. .0..0..0..1
..0..1..0..0. .1..0..1..1. .0..1..1..0. .0..1..1..0. .0..1..0..0
..1..1..0..1. .1..1..0..1. .0..1..0..0. .0..0..0..0. .1..1..0..1
..1..0..1..1. .1..0..0..1. .0..0..1..1. .0..1..1..0. .0..1..0..0
..0..0..1..0. .1..1..1..1. .0..1..1..0. .1..1..0..0. .1..1..0..0
CROSSREFS
Cf. A300682.
Sequence in context: A136833 A355631 A056067 * A086458 A179856 A098795
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 11 2018
STATUS
approved

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Last modified April 17 02:36 EDT 2024. Contains 371756 sequences. (Running on oeis4.)