A305952 Number of n X 6 0..1 arrays with every element unequal to 0, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

1, 272, 2800, 76951, 1969026, 52618569, 1406191296, 37746118432, 1013991166787, 27256970473749, 732839142493897, 19705593065291569, 529895557393242397, 14249531178588711106, 383190868822260763957, 10304612759199778770913

Offset

1,2

Comments

Column 6 of A305954.

Links

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

Example

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

Crossrefs

Cf. A305954.

Sequence in context: A316242 A230908 A385898 * A317213 A178268 A205345

Adjacent sequences: A305949 A305950 A305951 * A305953 A305954 A305955

Keyword

nonn,changed

Author

R. H. Hardin, Jun 15 2018

Status

approved