A297888 Number of nX7 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.

64, 301, 99, 223, 248, 264, 433, 579, 650, 1124, 1469, 2441, 3648, 5209, 7873, 12122, 19094, 29449, 44412, 68113, 105988, 167722, 263789, 411020, 634939, 986095, 1564186, 2480268, 3902903, 6131597, 9585398, 15100840, 23997787, 38032089

Offset

1,1

Comments

Column 7 of A297889.

Links

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

Example

Some solutions for n=7
..0..1..1..0..0..0..0. .0..1..1..0..1..0..0. .0..0..1..0..1..1..0
..0..0..0..1..1..1..1. .1..0..0..0..1..0..1. .1..1..1..0..0..0..1
..1..1..0..0..0..0..0. .0..1..0..1..0..0..1. .0..1..0..1..0..1..0
..0..1..0..1..1..1..1. .0..1..0..1..0..1..0. .0..1..0..1..0..1..0
..1..1..0..0..0..0..0. .0..1..0..1..0..0..1. .1..0..0..0..0..0..1
..0..0..0..1..1..1..1. .1..0..0..0..1..0..1. .1..0..1..1..1..0..1
..0..1..1..0..0..0..0. .0..1..1..0..1..0..0. .0..0..1..0..1..0..0

Crossrefs

Cf. A297889.

Sequence in context: A366817 A297462 A297699 * A298493 A298293 A299387

Adjacent sequences: A297885 A297886 A297887 * A297889 A297890 A297891

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved