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A303414 Number of 7Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero. 1
0, 421, 10384, 15852, 115770, 2158662, 24386918, 158640643, 1293822589, 14788283853, 149020593141, 1275569366713, 11671994401668, 115222219445362, 1107799093548111, 10250710845474527, 96126433140397235, 918622040686576956 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Row 7 of A303410.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..0. .0..1..0..1..0. .0..0..1..0..0. .0..0..0..0..0
..0..0..0..0..0. .1..0..0..0..1. .1..1..1..1..0. .0..0..0..0..0
..0..0..0..0..0. .0..0..0..0..0. .1..0..1..0..1. .1..1..0..1..0
..0..1..1..1..0. .1..1..0..1..1. .0..1..1..1..1. .0..0..1..0..0
..1..0..0..0..0. .0..0..0..0..0. .1..0..1..0..1. .0..1..0..1..1
..1..0..1..0..0. .1..0..0..0..0. .1..1..1..1..0. .1..0..0..0..0
..1..1..1..1..0. .0..1..0..1..1. .1..0..0..0..1. .0..1..0..1..1
CROSSREFS
Cf. A303410.
Sequence in context: A302732 A251198 A302533 * A242149 A083193 A340871
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 23 2018
STATUS
approved

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Last modified March 28 12:26 EDT 2024. Contains 371254 sequences. (Running on oeis4.)