A202724 Number of (n+3)X9 binary arrays with no more than three of any consecutive four bits set in any row or column

17498361951, 5600930157675, 1779844229799877, 562277092226375915, 176844069559231360063, 55803648810496645652897, 17602341245476520323260803, 5551394544058978098366123567

Offset

1,1

Comments

Column 6 of A202726

Links

R. H. Hardin, Table of n, a(n) for n = 1..22

Example

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

Crossrefs

Sequence in context: A113643 A233799 A330278 * A115537 A233486 A270895

Adjacent sequences: A202721 A202722 A202723 * A202725 A202726 A202727

Keyword

nonn

Author

R. H. Hardin Dec 23 2011

Status

approved