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A304854 Number of nX7 0..1 arrays with every element unequal to 0, 1, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 1
21, 127, 91, 264, 731, 2073, 6750, 23642, 80209, 281982, 1002046, 3608377, 12962477, 46720095, 168772741, 610745581, 2209961264, 8001134385, 28984697206, 105018572887, 380523339190, 1378930510442, 4997467621045, 18112318334850 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Column 7 of A304855.

LINKS

R. H. Hardin, Table of n, a(n) for n = 1..210

EXAMPLE

Some solutions for n=5

..0..0..0..0..0..0..0. .0..0..1..1..0..0..1. .0..0..1..1..1..1..0

..1..0..0..1..0..0..1. .0..0..0..0..1..1..1. .0..0..0..1..1..0..0

..1..1..0..1..0..1..1. .0..0..0..1..0..1..1. .0..0..0..0..1..0..0

..1..1..0..0..0..1..1. .0..0..0..0..0..0..1. .0..0..0..0..1..1..0

..1..0..0..0..0..0..1. .0..0..1..1..0..0..0. .0..0..0..1..1..1..1

CROSSREFS

Cf. A304855.

Sequence in context: A243882 A002299 A303807 * A305251 A316551 A304543

Adjacent sequences:  A304851 A304852 A304853 * A304855 A304856 A304857

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 19 2018

STATUS

approved

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Last modified June 15 15:16 EDT 2021. Contains 345049 sequences. (Running on oeis4.)