A300803 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 3 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.

64, 8192, 654628, 60123512, 5431609016, 492720806016, 44678859224720, 4051836004410912, 367449310053104876, 33323013503721659420, 3021976074733064177028, 274055043912124036181788

Offset

1,1

Comments

Column 7 of A300804.

Links

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

Example

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

Crossrefs

Cf. A300804.

Sequence in context: A299660 A300214 A302746 * A303455 A303461 A301442

Adjacent sequences: A300800 A300801 A300802 * A300804 A300805 A300806

Keyword

nonn

Author

R. H. Hardin, Mar 13 2018

Status

approved