A305096 Number of nX7 0..1 arrays with every element unequal to 1, 2, 4, 6 or 7 king-move adjacent elements, with upper left element zero.

8, 168, 229, 295, 2220, 10652, 23368, 101212, 548208, 1755533, 6005884, 28686726, 111251859, 386124632, 1623661531, 6678525469, 24553920771, 96714848399, 396871728701, 1525446283713, 5895004020841, 23736879955769, 93311453666095

Offset

1,1

Comments

Column 7 of A305097.

Links

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

Example

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

Crossrefs

Cf. A305097.

Sequence in context: A181167 A205567 A267205 * A032395 A316756 A294512

Adjacent sequences: A305093 A305094 A305095 * A305097 A305098 A305099

Keyword

nonn

Author

R. H. Hardin, May 25 2018

Status

approved