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A300424
Number of nX5 0..1 arrays with every element equal to 1, 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.
1
3, 96, 1390, 18205, 240196, 3175101, 41940055, 553858752, 7314644478, 96601163193, 1275761565009, 16848387433285, 222508616223701, 2938565229183137, 38808230767812986, 512521810773712332
OFFSET
1,1
COMMENTS
Column 5 of A300427.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1. .0..0..1..0..0
..1..1..1..0..0. .1..1..1..0..0. .1..1..0..1..1. .0..1..1..0..1
..0..1..0..1..0. .1..0..0..1..0. .1..1..0..0..0. .0..1..0..1..0
..0..1..1..0..1. .1..1..1..0..1. .0..0..1..0..0. .0..1..1..0..0
..1..0..0..1..1. .0..0..0..1..1. .0..1..1..1..0. .0..0..1..1..1
CROSSREFS
Cf. A300427.
Sequence in context: A249787 A264548 A094085 * A300686 A300609 A301351
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 05 2018
STATUS
approved