A299248 Number of nX7 0..1 arrays with every element equal to 0, 2, 3, 5, 6 or 7 king-move adjacent elements, with upper left element zero.

1, 130, 202, 2002, 21251, 223750, 2044405, 21212789, 227105938, 2271071651, 23645777755, 246352885297, 2552827451230, 26493876070013, 275607234143594, 2866930315549461, 29800020165962133, 310027901670675161

Offset

1,2

Comments

Column 7 of A299249.

Links

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

Example

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

Crossrefs

Cf. A299249.

Sequence in context: A050238 A115937 A298381 * A299457 A300095 A138482

Adjacent sequences: A299245 A299246 A299247 * A299249 A299250 A299251

Keyword

nonn

Author

R. H. Hardin, Feb 05 2018

Status

approved