A317608 Number of nX5 0..1 arrays with every element unequal to 0, 1, 2, 4, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

16, 94, 419, 2639, 23031, 161091, 1160029, 8965243, 67933591, 512456411, 3925879723, 30060384987, 229860158692, 1763744445257, 13538720632879, 103909849372918, 798195801028945, 6132464360757554, 47116777346859473

Offset

1,1

Comments

Column 5 of A317611.

Links

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

Example

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

Crossrefs

Cf. A317611.

Sequence in context: A305908 A316880 A317150 * A379569 A159245 A066487

Adjacent sequences: A317605 A317606 A317607 * A317609 A317610 A317611

Keyword

nonn

Author

R. H. Hardin, Aug 01 2018

Status

approved