A200271 Number of 0..7 arrays x(0..n+1) of n+2 elements with zero n-1st differences.

1, 8, 16, 36, 64, 112, 118, 228, 236, 574, 958, 2110, 1434, 4316, 2560, 8448, 18834, 60888, 38672, 73250, 15518, 42050, 48352, 309524

Offset: 1

Author

R. H. Hardin Nov 15 2011

Keywords

• nonn

Comments

Column 7 of A200272

Examples

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