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A302264
Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 3 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
64, 5135, 96004, 1984001, 41994750, 893462062, 18964765818, 402597400706, 8547940665506, 181527035285787, 3854821615967821, 81862339042940669, 1738453613332468089, 36918733850285685708, 784027054636001040433
OFFSET
1,1
COMMENTS
Column 7 of A302265.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..1..0..1..1. .0..1..1..1..0..0..1. .0..0..1..0..0..1..1
..0..0..1..1..0..1..0. .0..0..1..0..0..1..0. .0..0..1..0..0..1..0
..0..0..1..0..0..1..0. .0..0..1..1..0..1..0. .0..0..1..1..0..1..1
..0..0..1..1..0..1..0. .0..0..1..1..0..1..0. .0..0..1..1..0..1..1
..0..1..1..0..0..1..0. .0..1..1..0..0..1..1. .0..1..1..0..0..1..1
CROSSREFS
Cf. A302265.
Sequence in context: A189957 A146496 A058874 * A302964 A302807 A303468
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 04 2018
STATUS
approved