A300039 Number of nX7 0..1 arrays with every element equal to 1, 2, 3, 4, 6, 7 or 8 king-move adjacent elements, with upper left element zero.

8, 2907, 128610, 4532025, 173419447, 6789384478, 262361247480, 10149632583491, 393165011518395, 15223417803313451, 589419698633734436, 22823105070326713081, 883732801229613846760, 34218687812298572827543

Offset

1,1

Comments

Column 7 of A300040.

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..1. .0..0..0..0..1..0..1. .0..0..1..1..1..1..0
..0..1..0..1..1..0..1. .0..1..0..1..1..0..1. .0..1..0..1..1..0..0
..0..1..0..0..0..0..0. .0..1..0..1..0..0..1. .0..1..0..0..0..0..1
..0..0..0..1..1..0..1. .0..0..0..1..0..1..0. .0..0..0..1..1..1..0
..0..0..1..1..1..1..1. .0..0..1..0..1..0..1. .0..0..1..1..1..0..1

Crossrefs

Cf. A300040.

Sequence in context: A298336 A299397 A299227 * A282187 A217270 A137565

Adjacent sequences: A300036 A300037 A300038 * A300040 A300041 A300042

Keyword

nonn

Author

R. H. Hardin, Feb 23 2018

Status

approved