A200268 Number of 0..4 arrays x(0..n+1) of n+2 elements with zero n-1st differences.

1, 5, 7, 9, 13, 13, 21, 31, 19, 37, 75, 139, 97, 181, 101, 225, 277, 505, 465, 971, 225

Offset: 1

Author

R. H. Hardin Nov 15 2011

Keywords

• nonn

Comments

Column 4 of A200272

Examples

			All solutions for n=6
..2....0....1....1....2....2....3....4....3....2....3....2....1
..0....0....0....1....4....1....2....4....3....2....4....3....2
..2....0....1....1....2....2....3....4....3....2....3....2....1
..4....0....2....1....0....3....4....4....3....2....2....1....0
..4....0....2....1....0....3....4....4....3....2....2....1....0
..2....0....1....1....2....2....3....4....3....2....3....2....1
..0....0....0....1....4....1....2....4....3....2....4....3....2
..2....0....1....1....2....2....3....4....3....2....3....2....1