A305959 Number of nX6 0..1 arrays with every element unequal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

5, 1493, 39985, 1510278, 53422574, 1909062568, 68109190612, 2430866826404, 86749580967244, 3095897576075777, 110485085575220364, 3942947157982887199, 140714318867570592197, 5021756326535212808094, 179214430688041222485533

Offset

1,1

Comments

Column 6 of A305961.

Links

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

Example

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

Crossrefs

Cf. A305961.

Sequence in context: A203690 A304425 A316280 * A317220 A305690 A317070

Adjacent sequences: A305956 A305957 A305958 * A305960 A305961 A305962

Keyword

nonn

Author

R. H. Hardin, Jun 15 2018

Status

approved