A304765 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4, 5 or 6 king-move adjacent elements, with upper left element zero.

0, 209, 3680, 172574, 6978743, 292676592, 12219307955, 510976436144, 21366609684109, 893510784279365, 37365335846465488, 1562572262518146095, 65344912903528854346, 2732647907508684527299, 114276155295332420501253

Offset

1,2

Comments

Column 6 of A304767.

Links

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

Example

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

Crossrefs

Cf. A304767.

Sequence in context: A235512 A203040 A250951 * A316509 A317463 A029554

Adjacent sequences: A304762 A304763 A304764 * A304766 A304767 A304768

Keyword

nonn

Author

R. H. Hardin, May 18 2018

Status

approved