A200266 Number of 0..2 arrays x(0..n+1) of n+2 elements with zero n-1st differences.

1, 3, 3, 3, 5, 5, 5, 7, 3, 3, 7, 9, 11, 17, 5, 3, 13, 17, 15, 21, 5, 9, 21, 19, 9, 13, 3, 5, 21, 17

Offset: 1

Author

R. H. Hardin Nov 15 2011

Keywords

• nonn

Comments

Column 2 of A200272

Examples

			All solutions for n=6
..1....1....0....1....2
..0....2....0....1....2
..1....1....0....1....2
..2....0....0....1....2
..2....0....0....1....2
..1....1....0....1....2
..0....2....0....1....2
..1....1....0....1....2