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A298324 Number of nX4 0..1 arrays with every element equal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero. 1
1, 37, 78, 382, 1998, 11727, 73321, 464117, 2989370, 19362307, 125563388, 815538265, 5299610378, 34445631856, 223915162213, 1455642632182, 9463186137940, 61521343869951, 399960023169402, 2600211175972790 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Column 4 of A298328.
LINKS
FORMULA
Empirical recurrence of order 67 (see link above)
EXAMPLE
Some solutions for n=7
..0..0..1..1. .0..0..1..0. .0..1..1..0. .0..0..1..1. .0..0..1..1
..0..0..0..1. .1..0..0..0. .0..0..1..1. .0..1..0..1. .0..1..1..0
..1..1..1..1. .1..1..0..0. .0..1..0..0. .1..0..1..0. .1..0..0..0
..0..1..1..1. .1..0..0..1. .1..0..1..0. .0..1..0..1. .1..1..1..0
..0..0..0..1. .0..0..1..1. .0..1..0..1. .1..0..1..1. .0..1..0..1
..1..1..0..0. .1..0..1..1. .0..0..1..0. .1..0..0..1. .0..0..0..1
..1..1..0..1. .0..0..1..0. .0..0..0..0. .1..1..0..0. .0..0..1..1
CROSSREFS
Cf. A298328.
Sequence in context: A071884 A216287 A216329 * A346559 A256585 A211725
KEYWORD
nonn
AUTHOR
R. H. Hardin, Jan 17 2018
STATUS
approved

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Last modified May 20 08:05 EDT 2024. Contains 372703 sequences. (Running on oeis4.)