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

1,2

Comments

Column 7 of A200272

Links

Table of n, a(n) for n=1..24.

Example

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

Crossrefs

Sequence in context: A366511 A217672 A194601 * A197986 A054301 A197773

Adjacent sequences: A200268 A200269 A200270 * A200272 A200273 A200274

Keyword

nonn

Author

R. H. Hardin Nov 15 2011

Status

approved