A202571 Number of (n+3)X8 binary arrays with no more than two of any consecutive four bits set in any row or column

27425677, 1467328435, 80702629805, 4416423552899, 237078101794811, 12758620895555309, 689832527025219649, 37277534522856049763, 2013000583727246361937, 108671912957615775955061

Offset

1,1

Comments

Column 5 of A202574

Links

R. H. Hardin, Table of n, a(n) for n = 1..17

Example

Some solutions for n=2
..0..1..1..0..0..1..0..0....0..1..1..0..0..1..1..0....0..0..0..1..1..0..0..0
..0..0..1..1..0..0..1..1....0..1..1..0..0..0..0..0....1..1..0..0..0..1..0..0
..0..0..0..1..1..0..0..0....0..0..0..0..0..1..0..1....0..0..0..0..1..1..0..0
..0..0..0..0..1..0..0..1....0..0..0..0..0..0..1..0....1..1..0..0..0..0..0..1
..1..0..0..0..0..0..1..0....1..1..0..0..0..0..1..1....0..0..0..0..0..0..0..1

Crossrefs

Sequence in context: A184670 A069342 A151698 * A274367 A258688 A269282

Adjacent sequences: A202568 A202569 A202570 * A202572 A202573 A202574

Keyword

nonn

Author

R. H. Hardin Dec 21 2011

Status

approved