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A302672
Number of 6Xn 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.
1
0, 361, 2802, 21949, 316977, 3640304, 46360666, 582115385, 7102982284, 89673817840, 1109953847172, 13832059626512, 172620198739923, 2146228140110545, 26771858593225105, 333424179617097795
OFFSET
1,2
COMMENTS
Row 6 of A302670.
LINKS
EXAMPLE
Some solutions for n=5
..0..0..0..1..1. .0..0..0..1..1. .0..0..0..1..1. .0..0..1..0..0
..0..0..1..0..0. .1..1..0..1..1. .1..1..1..0..1. .0..0..0..1..0
..1..1..1..0..1. .1..1..0..1..0. .1..0..0..0..0. .1..1..1..1..1
..0..0..0..1..0. .1..1..0..0..0. .0..1..0..1..1. .0..0..0..0..1
..1..1..0..1..1. .1..0..0..1..0. .1..1..0..1..0. .1..0..1..1..0
..0..0..0..1..1. .1..1..0..0..1. .0..0..1..0..0. .1..1..0..1..1
CROSSREFS
Cf. A302670.
Sequence in context: A176899 A361704 A302229 * A302476 A231975 A112078
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 11 2018
STATUS
approved