A297905 Number of nX6 0..1 arrays with every element equal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero.

13, 73, 5, 97, 395, 257, 1586, 5761, 18420, 89795, 363173, 1833923, 8496393, 38302295, 196700384, 914662922, 4312830207, 21655368892, 101858718582, 488281692050, 2410686976807, 11446024784253, 55197091923503

Offset

1,1

Comments

Column 6 of A297907.

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

Some solutions for n=7
..0..0..1..1..0..0. .0..0..1..0..1..1. .0..1..1..0..1..1. .0..0..0..1..1..0
..0..0..1..1..0..0. .0..0..1..0..1..1. .0..1..1..0..1..1. .0..0..1..0..1..1
..1..1..0..0..1..1. .0..1..1..0..0..1. .0..0..1..0..0..0. .1..1..1..0..0..1
..1..1..0..0..1..1. .0..0..1..1..0..1. .0..1..1..0..1..1. .0..0..1..0..1..1
..0..0..1..1..0..0. .1..0..1..0..1..1. .1..0..1..0..1..1. .0..0..1..0..1..1
..1..1..0..0..1..1. .0..0..1..0..0..1. .0..0..1..0..0..0. .0..1..1..0..0..1
..1..1..0..0..1..1. .1..0..0..0..1..0. .1..0..0..0..1..1. .0..1..1..0..0..1

Crossrefs

Cf. A297907.

Sequence in context: A094943 A189605 A000470 * A298499 A298318 A299391

Adjacent sequences: A297902 A297903 A297904 * A297906 A297907 A297908

Keyword

nonn

Author

R. H. Hardin, Jan 08 2018

Status

approved