A297887 Number of nX6 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.

32, 137, 67, 134, 162, 253, 264, 437, 656, 942, 1308, 2254, 3113, 4698, 7376, 11228, 17233, 26591, 41309, 63296, 98561, 153605, 238257, 370604, 578626, 900194, 1404705, 2196541, 3430179, 5356918, 8373173, 13095939, 20485633, 32064268

Offset

1,1

Comments

Column 6 of A297889.

Links

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

Example

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

Crossrefs

Cf. A297889.

Sequence in context: A044745 A297641 A304380 * A298492 A298292 A299386

Adjacent sequences: A297884 A297885 A297886 * A297888 A297889 A297890

Keyword

nonn

Author

R. H. Hardin, Jan 07 2018

Status

approved