A317382 Number of nX7 0..1 arrays with every element unequal to 0, 1, 2, 5, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

64, 101, 731, 5704, 52617, 508181, 4726521, 44156330, 416173164, 3910781456, 36706659069, 345101051493, 3243559396952, 30475536981532, 286405959411440, 2691636786909646, 25294309153595416, 237705058354164840

Offset

1,1

Comments

Column 7 of A317383.

Links

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

Example

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

Crossrefs

Cf. A317383.

Sequence in context: A304925 A316419 A306165 * A331455 A039481 A094682

Adjacent sequences: A317379 A317380 A317381 * A317383 A317384 A317385

Keyword

nonn

Author

R. H. Hardin, Jul 26 2018

Status

approved