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A300688 Number of nX7 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
8, 981, 37100, 1242620, 42006289, 1431755828, 48809162176, 1662541314220, 56619912876077, 1928366919064951, 65677923512122208, 2236900077280881002, 76185693577077136760, 2594778452806336608700, 88374539564630929465907 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 7 of A300689.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0..0. .0..0..0..0..0..1..0. .0..0..0..0..0..0..1
..0..1..1..1..0..1..0. .0..1..1..0..1..0..1. .0..1..1..0..1..1..1
..0..0..1..0..1..0..1. .0..0..0..1..1..1..0. .0..0..0..1..0..0..0
..0..0..1..0..1..0..1. .0..1..1..0..0..0..1. .0..1..1..1..0..1..0
..1..1..0..1..1..0..1. .0..0..1..1..1..0..1. .1..0..0..1..1..1..0
CROSSREFS
Cf. A300689.
Sequence in context: A203524 A331491 A300426 * A300611 A301353 A183888
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 11 2018
STATUS
approved

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Last modified March 18 22:56 EDT 2024. Contains 370952 sequences. (Running on oeis4.)