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A303887 Number of nX7 0..1 arrays with every element unequal to 0, 2, 3 or 4 king-move adjacent elements, with upper left element zero. 1
1, 908, 684, 7433, 16431, 88901, 308271, 1437397, 5832957, 25738579, 111298625, 488061118, 2160741927, 9505071631, 42622781668, 188580476451, 852064649176, 3793761243474, 17225448118492, 77154233211504, 351491360516174 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Column 7 of A303888.

LINKS

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

EXAMPLE

Some solutions for n=5

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

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

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

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

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

CROSSREFS

Cf. A303888.

Sequence in context: A253354 A204613 A204797 * A305280 A304893 A316575

Adjacent sequences:  A303884 A303885 A303886 * A303888 A303889 A303890

KEYWORD

nonn

AUTHOR

R. H. Hardin, May 02 2018

STATUS

approved

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Last modified August 13 22:39 EDT 2022. Contains 356109 sequences. (Running on oeis4.)