A220460 Equals one maps: number of nX6 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal, vertical and antidiagonal neighbors in a random 0..1 nX6 array

32, 848, 20897, 530196, 12754438, 303102319, 7147490007

Offset

1,1

Comments

Column 6 of A220461

Links

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

Example

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

Crossrefs

Sequence in context: A181248 A139677 A231161 * A203957 A301839 A302067

Adjacent sequences: A220457 A220458 A220459 * A220461 A220462 A220463

Keyword

nonn

Author

R. H. Hardin Dec 15 2012

Status

approved