A221064 Equals one maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to exactly one of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array

1, 32, 323, 3322, 29939, 254900, 2080204, 16745866, 134159160, 1073654544, 8589790360, 68719289140, 549755523233, 4398046165958, 35184371572554, 281474976136760, 2251799812843688, 18014398508593054, 144115188074566894

Offset

1,2

Comments

Row 3 of A221062

Links

R. H. Hardin, Table of n, a(n) for n = 1..26

Example

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

Crossrefs

Sequence in context: A126553 A368621 A221661 * A224161 A224412 A192075

Adjacent sequences: A221061 A221062 A221063 * A221065 A221066 A221067

Keyword

nonn

Author

R. H. Hardin Dec 31 2012

Status

approved