A200445 Number of 0..n arrays x(0..8) of 9 elements with zero 4th differences.

2, 3, 4, 5, 6, 9, 12, 17, 22, 37, 52, 71, 94, 117, 148, 197, 250, 305, 364, 453, 546, 655, 768, 897, 1050, 1227, 1412, 1623, 1846, 2121, 2400, 2729, 3066, 3417, 3824, 4289, 4774, 5285, 5812, 6447, 7094, 7799, 8516, 9309, 10190, 11117, 12072, 13101, 14170

Offset: 1

Author

R. H. Hardin Nov 18 2011

Keywords

• nonn

Comments

Row 5 of A200443

Examples

			Some solutions for n=10
.10....5....9....8....8...10....3...10....7....6....3....0....2....1....9....7
..9....5....9....4....7....6....3....3...10....3....7....1....6....5....8....3
..8....5....9....3....6....3....3....0...10....1....8....2....7....6....7....2
..7....5....9....4....5....1....3....0....8....0....7....3....6....5....6....3
..6....5....9....6....4....0....3....2....5....0....5....4....4....3....5....5
..5....5....9....8....3....0....3....5....2....1....3....5....2....1....4....7
..4....5....9....9....2....1....3....8....0....3....2....6....1....0....3....8
..3....5....9....8....1....3....3...10....0....6....3....7....2....1....2....7
..2....5....9....4....0....6....3...10....3...10....7....8....6....5....1....3
		

Links

• R. H. Hardin, Table of n, a(n) for n = 1..200