A220544 Equals one maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and vertical neighbors in a random 0..2 nX4 array

8, 176, 3778, 64968, 1047584, 16776012, 268433898, 4294965416, 68719474278, 1099511624848, 17592186040838, 281474976706320, 4503599627365360, 72057594037922000, 1152921504606840240, 18446744073709544080

Offset

1,1

Comments

Column 4 of A220545

Links

R. H. Hardin, Table of n, a(n) for n = 1..20

Example

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

Crossrefs

Sequence in context: A024109 A027464 A220966 * A220749 A221631 A064342

Adjacent sequences: A220541 A220542 A220543 * A220545 A220546 A220547

Keyword

nonn

Author

R. H. Hardin Dec 15 2012

Status

approved