A297318 Number of 5Xn 0..1 arrays with every 1 horizontally or antidiagonally adjacent to 1 or 2 neighboring 1s.

1, 200, 3159, 29212, 484808, 8273245, 121339476, 1815438259, 27950049482, 426949482189, 6494779570376, 98961790075322, 1508712969034695, 22994788538451691, 350445360895775177, 5341072484013959839

Offset

1,2

Comments

Row 5 of A297314.

Links

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

Example

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

Crossrefs

Cf. A297314.

Sequence in context: A218846 A219425 A341545 * A200892 A220390 A231803

Adjacent sequences: A297315 A297316 A297317 * A297319 A297320 A297321

Keyword

nonn

Author

R. H. Hardin, Dec 28 2017

Status

approved