A305591 Number of nX6 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 6 king-move adjacent elements, with upper left element zero.

32, 569, 6818, 89466, 1103744, 13941521, 175683720, 2213918787, 27910555993, 351952078164, 4437792774181, 55955951985349, 705571347078058, 8896876212494566, 112184230213989901, 1414576206492956374

Offset

1,1

Comments

Column 6 of A305593.

Links

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

Example

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

Crossrefs

Cf. A305593.

Sequence in context: A316207 A305774 A317123 * A317009 A316874 A317602

Adjacent sequences: A305588 A305589 A305590 * A305592 A305593 A305594

Keyword

nonn

Author

R. H. Hardin, Jun 05 2018

Status

approved