A222388 Sum of neighbor maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 3 of their horizontal and antidiagonal neighbors in a random 0..2 3Xn array

8, 64, 512, 3968, 32768, 262144, 2093824, 16776064, 134121152, 1073741824, 8589934592, 68719450112, 549755703296, 4398040219648, 35184371580928, 281474867658752, 2251799813685248, 18014398509481984, 144115184855048192

Offset

1,1

Comments

Row 3 of A222386

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A262335 A221664 A228981 * A222937 A269618 A269582

Adjacent sequences: A222385 A222386 A222387 * A222389 A222390 A222391

Keyword

nonn

Author

R. H. Hardin Feb 18 2013

Status

approved