A222447 Sum of neighbor maps: number of nX4 binary arrays indicating the locations of corresponding elements equal to the sum mod 4 of their horizontal, vertical and antidiagonal neighbors in a random 0..3 nX4 array.

16, 210, 4056, 65536, 1048576, 16750154, 268430848, 4294967008, 68716055088, 1099511627776, 17592186044416, 281474975268864, 4503599621232000, 72057594037927936, 1152921504606846976, 18446744065442448416

Offset: 1

Author

R. H. Hardin Feb 20 2013

Keywords

• nonn

Comments

Column 4 of A222448

Examples

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

Links

• R. H. Hardin, Table of n, a(n) for n = 1..18