A202722 Number of (n+3)X7 binary arrays with no more than three of any consecutive four bits set in any row or column

99003393, 8918220179, 798649122250, 71167367871410, 6316493287643944, 562277092226375915, 50035880671367204219, 4451869056496085206106, 396085241270480336084770, 35242151010434808732906386

Offset

1,1

Comments

Column 4 of A202726

Links

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

Example

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

Crossrefs

Sequence in context: A322693 A251357 A168640 * A330129 A182750 A033424

Adjacent sequences: A202719 A202720 A202721 * A202723 A202724 A202725

Keyword

nonn

Author

R. H. Hardin Dec 23 2011

Status

approved