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A300371 Number of nX7 0..1 arrays with every element equal to 2 or 3 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. 1
0, 6, 16, 39, 270, 1592, 12042, 75739, 490425, 3084820, 19634393, 129519588, 829432020, 5341866361, 34667291397, 223006749453, 1438573920539, 9290258941352, 59927615962595, 386783857393798, 2495707675837699 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 7 of A300372.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..0..0..0. .0..0..0..0..1..1..0. .0..0..0..0..1..1..0
..0..1..1..1..1..1..0. .0..1..1..0..1..0..0. .0..1..1..0..1..0..0
..1..0..0..1..0..1..0. .1..1..0..1..0..1..0. .0..1..0..0..1..1..1
..1..0..0..0..0..1..0. .0..0..1..0..1..1..0. .0..0..1..1..0..0..1
..1..1..1..1..1..0..0. .0..1..1..0..0..0..0. .0..1..1..0..0..1..1
CROSSREFS
Cf. A300372.
Sequence in context: A092274 A068941 A130902 * A009955 A160255 A213667
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 04 2018
STATUS
approved

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Last modified April 18 22:18 EDT 2024. Contains 371782 sequences. (Running on oeis4.)