A220410 Equals two maps: number of 5Xn binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, diagonal and antidiagonal neighbors in a random 0..1 5Xn array

1, 292, 4304, 139233, 2996186, 76047436

Offset

1,2

Comments

Row 5 of A220406

Links

Table of n, a(n) for n=1..6.

Example

Some solutions for n=3
..0..0..0....0..0..0....0..0..0....1..0..1....1..1..0....0..0..1....1..0..0
..0..0..0....1..0..0....0..0..0....0..0..0....0..0..0....0..0..0....0..0..0
..0..1..1....0..1..0....1..1..0....1..0..0....0..0..1....1..0..1....1..0..0
..0..1..0....0..0..1....1..0..0....0..0..0....1..0..0....0..1..0....0..1..0
..0..0..0....0..1..1....0..1..1....0..1..0....1..0..1....1..1..1....0..0..1

Crossrefs

Sequence in context: A236049 A233755 A233749 * A232022 A231752 A221480

Adjacent sequences: A220407 A220408 A220409 * A220411 A220412 A220413

Keyword

nonn

Author

R. H. Hardin Dec 13 2012

Status

approved