A304063 Number of nX6 0..1 arrays with every element unequal to 2, 3, 4 or 5 king-move adjacent elements, with upper left element zero.

0, 209, 1891, 48148, 1105513, 25507453, 598203550, 13909028356, 324563218021, 7567409946962, 176452028507188, 4114706214487918, 95946894631956152, 2237334544522483079, 52170999659329203243, 1216543293562638286790

Offset

1,2

Comments

Column 6 of A304065.

Links

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

Example

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

Crossrefs

Cf. A304065.

Sequence in context: A181623 A104874 A157441 * A305455 A305020 A316684

Adjacent sequences: A304060 A304061 A304062 * A304064 A304065 A304066

Keyword

nonn

Author

R. H. Hardin, May 05 2018

Status

approved