A202718 Number of (n+3)X(n+3) binary arrays with no more than three of any consecutive four bits set in any row or column

41503, 14089479, 16878985502, 71167367871410, 1055277790676846818, 55803648810496645652897, 10454480376363017611676717695

Offset

1,1

Comments

Diagonal of A202726

Links

Table of n, a(n) for n=1..7.

Example

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

Crossrefs

Sequence in context: A236615 A202726 A202719 * A165114 A002879 A207049

Adjacent sequences: A202715 A202716 A202717 * A202719 A202720 A202721

Keyword

nonn

Author

R. H. Hardin Dec 23 2011

Status

approved