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A316382
Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 6 or 8 king-move adjacent elements, with upper left element zero.
1
8, 4184, 57453, 1755475, 47958446, 1244767536, 33482107028, 901574650029, 24039453398630, 644896976222053, 17279478047167940, 462737123593688897, 12398931672108492980, 332171268528642261600, 8898699258491354145863
OFFSET
1,1
COMMENTS
Column 7 of A316383.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..1..1..1. .0..1..0..1..0..1..0. .0..1..1..0..0..0..1
..0..0..1..0..0..0..0. .0..0..1..0..1..1..0. .0..0..0..0..0..1..0
..0..0..0..1..1..1..1. .0..0..0..0..1..1..1. .0..0..0..1..1..0..0
..0..1..0..1..1..1..1. .0..1..1..0..0..1..0. .0..1..1..1..1..1..0
..0..0..0..1..1..0..0. .0..0..1..0..1..0..0. .0..0..1..0..0..1..1
CROSSREFS
Cf. A316383.
Sequence in context: A304900 A316582 A304596 * A306142 A317375 A100351
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 30 2018
STATUS
approved