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A300679 Number of nX5 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, 13, 8, 80, 398, 1382, 6686, 30218, 131674, 611429, 2764144, 12588291, 57406818, 261411829, 1191585608, 5430308271, 24749976109, 112805678823, 514149652500, 2343435239710, 10681117766000, 48683513703774, 221894678763366 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 5 of A300682.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..0..1. .0..0..0..1..1. .0..0..0..0..1. .0..0..0..1..0
..0..1..0..1..1. .0..1..0..1..0. .0..1..0..1..1. .0..1..0..0..0
..0..0..1..0..1. .1..1..0..1..1. .1..1..1..0..0. .1..1..1..1..1
..0..1..1..1..0. .1..0..1..0..1. .0..0..0..1..0. .0..0..1..0..1
..0..0..0..0..0. .0..0..1..1..0. .0..1..0..0..0. .0..0..1..1..0
CROSSREFS
Cf. A300682.
Sequence in context: A250031 A301825 A300377 * A304137 A305043 A066552
KEYWORD
nonn
AUTHOR
R. H. Hardin, Mar 11 2018
STATUS
approved

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Last modified April 13 15:44 EDT 2024. Contains 371644 sequences. (Running on oeis4.)