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A306142
Number of nX7 0..1 arrays with every element unequal to 1, 2, 3, 4, 6 or 7 king-move adjacent elements, with upper left element zero.
1
8, 4184, 79839, 2880944, 114440831, 3871080422, 138192505287, 4979043059695, 176429151145679, 6292688444495891, 224492394855179697, 7996800997805828281, 285059535256378607710, 10161092061905988608588, 362149341462830459252149
OFFSET
1,1
COMMENTS
Column 7 of A306143.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..0..1..0..1..0. .0..0..1..1..1..1..0. .0..0..1..1..0..0..1
..0..0..1..1..0..1..0. .0..1..0..0..0..0..0. .0..1..0..1..1..1..1
..0..0..1..1..1..1..1. .0..0..1..0..0..0..1. .0..0..1..1..0..1..0
..0..1..0..0..1..1..1. .0..1..0..0..0..1..1. .0..1..0..0..1..1..0
..0..0..0..1..1..0..0. .0..0..0..1..1..0..1. .0..0..0..0..1..0..1
CROSSREFS
Cf. A306143.
Sequence in context: A316582 A304596 A316382 * A317375 A100351 A045478
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 22 2018
STATUS
approved