A295548 Number of nX5 0..1 arrays with each 1 horizontally or vertically adjacent to 1, 3 or 4 1s.

6, 55, 391, 3035, 23315, 179499, 1385901, 10668635, 82245065, 634066121, 4887549722, 37675822677, 290431052728, 2238854904233, 17258616616589, 133041286346610, 1025575697742778, 7905855367729838, 60943854481663811

Offset

1,1

Comments

Column 5 of A295551.

Links

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

Example

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

Crossrefs

Cf. A295551.

Sequence in context: A009577 A097300 A295094 * A198855 A318592 A342388

Adjacent sequences: A295545 A295546 A295547 * A295549 A295550 A295551

Keyword

nonn

Author

R. H. Hardin, Nov 23 2017

Status

approved