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A304893 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero. 1
1, 908, 776, 18773, 86300, 793698, 7309444, 56105221, 545744025, 4501996186, 40822487746, 356527024641, 3135277472780, 27735274590050, 243518991915673, 2150034839444859, 18927252511729349, 166813401206430162 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A304894.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A304894.

Sequence in context: A204797 A303887 A305280 * A316575 A304550 A316375

Adjacent sequences:  A304890 A304891 A304892 * A304894 A304895 A304896

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 20 2018

STATUS

approved

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Last modified July 28 11:11 EDT 2021. Contains 346326 sequences. (Running on oeis4.)