A222937 Sum of neighbor maps: number of 3Xn binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal and antidiagonal neighbors in a random 0..3 3Xn array.

8, 64, 512, 4000, 32760, 262104, 2097152, 16777216, 134217728, 1073741824, 8589499198, 68719476736, 549755813888, 4398046511104, 35184372088832, 281474975268864, 2251799813683712, 18014398509056000, 144115188075855872

Offset: 1

Author

R. H. Hardin Mar 09 2013

Keywords

• nonn

Comments

Row 3 of A222935

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..184