A298491 Number of nX5 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.

16, 69, 43, 101, 178, 253, 423, 715, 1082, 1821, 3203, 5330, 8978, 15692, 26461, 46208, 81149, 140777, 249483, 441475, 779765, 1395734, 2500928, 4482129, 8083673, 14626941, 26461576, 48067594, 87581436, 159592285, 291543010, 533756714

Offset

1,1

Comments

Column 5 of A298494.

Links

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

Example

Some solutions for n=9
..0..1..1..0..0. .0..0..1..1..1. .0..0..0..0..0. .0..1..1..0..1
..1..1..1..1..0. .1..0..1..0..1. .1..1..1..1..1. .1..1..1..1..1
..0..0..0..0..0. .1..1..1..0..0. .1..0..1..1..0. .0..0..0..0..0
..1..0..0..1..1. .1..1..1..0..0. .1..1..1..1..1. .1..0..0..1..0
..0..0..0..0..0. .1..0..1..0..1. .0..0..0..0..0. .0..0..0..0..0
..1..1..1..1..0. .0..0..1..1..1. .0..1..0..0..1. .1..1..1..1..1
..0..1..1..0..0. .0..0..1..1..1. .0..0..0..0..0. .0..0..0..0..0
..1..1..1..1..1. .1..0..1..0..1. .1..1..1..1..1. .1..1..1..1..1
..0..0..0..0..1. .0..0..1..1..1. .0..0..0..0..0. .0..1..1..0..1

Crossrefs

Cf. A298494.

Sequence in context: A247663 A235643 A297886 * A298291 A299385 A299184

Adjacent sequences: A298488 A298489 A298490 * A298492 A298493 A298494

Keyword

nonn

Author

R. H. Hardin, Jan 20 2018

Status

approved