A303045 Number of 7Xn 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, diagonally or antidiagonally adjacent elements, with upper left element zero.

64, 86, 459, 1686, 9882, 63254, 345668, 1853428, 10924077, 67726475, 403669088, 2380303051, 14509938056, 90934286594, 564101640722, 3472561956163, 21698726671644, 137462825832230, 867471097889215, 5452385965874930

Offset

1,1

Comments

Row 7 of A303040.

Links

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

Example

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

Crossrefs

Cf. A303040.

Sequence in context: A302432 A303202 A302315 * A302882 A303530 A119894

Adjacent sequences: A303042 A303043 A303044 * A303046 A303047 A303048

Keyword

nonn

Author

R. H. Hardin, Apr 17 2018

Status

approved