A305767 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 4 or 7 king-move adjacent elements, with upper left element zero.

32, 1576, 15874, 240701, 3343997, 47791549, 686168124, 9812796379, 140721354959, 2015731961192, 28883610743616, 413862103479629, 5929890697010320, 84967009587871763, 1217440538231235326, 17444057654131554627

Offset

1,1

Comments

Column 6 of A305769.

Links

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

Example

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

Crossrefs

Cf. A305769.

Sequence in context: A013994 A281953 A316181 * A317116 A305528 A317002

Adjacent sequences: A305764 A305765 A305766 * A305768 A305769 A305770

Keyword

nonn

Author

R. H. Hardin, Jun 10 2018

Status

approved