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A305514 Number of nX6 0..1 arrays with every element unequal to 1, 2, 5, 6 or 8 king-move adjacent elements, with upper left element zero. 1
5, 5, 19, 38, 108, 343, 925, 2627, 7334, 20665, 56990, 159501, 448046, 1238263, 3464117, 9688753, 26905744, 75167708, 209780236, 584191642, 1630491607, 4547388813, 12677376191, 35365875462, 98624293125, 275037739818 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Column 6 of A305516.
LINKS
FORMULA
Empirical recurrence of order 91 (see link above)
EXAMPLE
Some solutions for n=5
..0..1..0..0..0..0. .0..0..0..0..0..0. .0..0..0..0..0..0. .0..1..0..0..1..0
..0..0..0..1..0..1. .1..0..1..0..1..0. .0..1..0..1..0..1. .0..0..0..0..0..0
..0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..0..0..0..0. .0..0..0..0..0..0
..1..0..0..0..0..0. .0..0..0..0..0..1. .1..0..0..0..0..0. .0..1..1..0..0..1
..0..0..1..0..1..0. .0..1..0..1..0..0. .0..0..1..0..1..0. .0..1..1..0..0..0
CROSSREFS
Cf. A305516.
Sequence in context: A146146 A145937 A246983 * A039914 A274910 A370547
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jun 03 2018
STATUS
approved

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Last modified February 23 13:19 EST 2024. Contains 370283 sequences. (Running on oeis4.)