A220278 Equals two maps: number of nX5 binary arrays indicating the locations of corresponding elements equal to exactly two of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX5 array

7, 322, 7987, 192553, 4761666, 120451866

Offset

1,1

Comments

Column 5 of A220279

Links

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

Example

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

Crossrefs

Sequence in context: A219267 A244851 A082160 * A163437 A109059 A002000

Adjacent sequences: A220275 A220276 A220277 * A220279 A220280 A220281

Keyword

nonn

Author

R. H. Hardin Dec 09 2012

Status

approved