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A285745
Number of n X 3 0..1 arrays with the number of 1's horizontally, diagonally or antidiagonally adjacent to some 0 one less than the number of 0's adjacent to some 1.
1
1, 8, 105, 550, 5105, 30918, 265920, 1773432, 14632372, 103605826, 834224969, 6128787272, 48666035225, 365893476096, 2883831290602, 22005412864334, 172812531531152, 1331535174196624, 10442072847350585, 80985489140322402
OFFSET
1,2
COMMENTS
Column 3 of A285750.
LINKS
EXAMPLE
Some solutions for n=4
..0..0..0. .1..1..1. .1..1..0. .0..0..1. .0..1..1. .0..0..0. .1..0..1
..1..1..0. .0..0..0. .1..0..0. .0..1..0. .1..1..1. .0..1..1. .0..0..0
..1..0..1. .0..0..0. .0..0..0. .1..0..1. .1..1..0. .1..0..1. .0..0..0
..1..0..0. .0..0..1. .1..0..0. .0..0..1. .0..0..0. .0..0..1. .1..0..0
CROSSREFS
Cf. A285750.
Sequence in context: A266040 A354173 A146346 * A119934 A247537 A302261
KEYWORD
nonn
AUTHOR
R. H. Hardin, Apr 25 2017
STATUS
approved