A303413 Number of 6Xn 0..1 arrays with every element equal to 1, 2, 4, 5 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

0, 162, 2327, 3256, 21361, 236326, 1716995, 8688851, 56229035, 428784791, 3021617644, 19058753004, 128800589241, 899664264951, 6188584855591, 41513163165807, 282748964373121, 1940464266658865, 13278427810584311

Offset

1,2

Comments

Row 6 of A303410.

Links

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

Example

Some solutions for n=5
..0..0..0..0..0. .0..1..0..1..1. .0..0..1..0..0. .0..0..1..0..0
..0..0..0..0..0. .1..0..1..0..0. .1..0..1..1..0. .1..0..1..1..1
..1..1..1..1..1. .1..1..1..1..1. .1..1..0..0..0. .0..1..1..0..0
..1..0..1..0..1. .0..0..1..0..0. .0..0..1..0..0. .1..0..1..0..1
..1..1..0..1..1. .1..0..1..0..1. .1..0..1..1..0. .1..0..1..1..1
..0..0..1..0..0. .1..1..1..1..1. .1..1..1..0..1. .0..1..0..0..1

Crossrefs

Cf. A303410.

Sequence in context: A213288 A302532 A288489 * A249295 A221871 A245955

Adjacent sequences: A303410 A303411 A303412 * A303414 A303415 A303416

Keyword

nonn

Author

R. H. Hardin, Apr 23 2018

Status

approved