A298220 Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 5 king-move adjacent elements, with upper left element zero.

64, 353, 451, 4767, 30780, 150617, 1261845, 8555774, 57269902, 425814658, 2966495520, 20993370991, 151153645049, 1069021092485, 7615451236569, 54386372056788, 386712508375753, 2755713914705831, 19642030950592575

Offset

1,1

Comments

Column 7 of A298221.

Links

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

Example

Some solutions for n=6
..0..1..0..1..0..1..1. .0..0..1..1..1..1..1. .0..1..0..0..1..1..0
..1..0..1..1..0..1..0. .1..0..1..0..1..1..0. .0..1..1..1..0..0..0
..0..0..1..0..1..1..1. .1..1..1..0..1..0..0. .1..1..0..0..0..1..1
..0..0..1..1..1..0..0. .0..0..0..0..0..0..0. .1..1..0..1..1..0..0
..1..0..0..0..1..0..1. .0..1..0..1..1..1..0. .1..0..0..0..0..0..1
..1..1..0..0..0..0..1. .1..1..0..0..1..1..1. .0..0..0..1..1..0..1

Crossrefs

Cf. A298221.

Sequence in context: A297642 A061102 A016779 * A299349 A299096 A299878

Adjacent sequences: A298217 A298218 A298219 * A298221 A298222 A298223

Keyword

nonn

Author

R. H. Hardin, Jan 15 2018

Status

approved