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A304417
Number of nX6 0..1 arrays with every element unequal to 0, 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.
1
1, 272, 2671, 60245, 1389257, 32181958, 755715475, 17729422188, 416850100691, 9802695636421, 230580600605761, 5424215008615737, 127605765822837170, 3002004817470375696, 70624643094278572766, 1661510342437803768396
OFFSET
1,2
COMMENTS
Column 6 of A304419.
LINKS
EXAMPLE
Some solutions for n=5
..0..1..1..0..0..1. .0..1..1..0..1..0. .0..1..1..0..0..1. .0..1..1..0..1..1
..0..1..0..1..0..0. .0..1..0..1..0..1. .0..1..1..0..1..0. .0..1..0..1..0..0
..0..0..1..0..1..1. .0..1..0..0..1..1. .0..0..1..1..0..1. .0..1..0..0..1..1
..1..1..1..1..0..1. .0..1..1..0..0..0. .1..1..0..0..0..0. .0..1..1..0..0..1
..0..1..0..0..0..1. .1..0..1..1..1..1. .1..1..0..1..1..1. .1..0..1..0..1..0
CROSSREFS
Cf. A304419.
Sequence in context: A253113 A234884 A158587 * A316242 A230908 A305952
KEYWORD
nonn
AUTHOR
R. H. Hardin, May 12 2018
STATUS
approved