A299141 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 5 or 7 king-move adjacent elements, with upper left element zero.

8, 3336, 298361, 23808476, 1958821107, 161617794805, 13311860331263, 1096571119921011, 90332592148780928, 7441355378176877032, 612998553731816949526, 50497150303834130394009, 4159817600706531428357054

Offset

1,1

Comments

Column 7 of A299142.

Links

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

Example

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

Crossrefs

Cf. A299142.

Sequence in context: A079177 A298279 A299372 * A299936 A299066 A299838

Adjacent sequences: A299138 A299139 A299140 * A299142 A299143 A299144

Keyword

nonn

Author

R. H. Hardin, Feb 03 2018

Status

approved