A200267 Number of 0..3 arrays x(0..n+1) of n+2 elements with zero n-1st differences

1, 4, 4, 6, 8, 8, 8, 16, 4, 10, 12, 36, 20, 48, 8, 20, 28, 70, 28, 154, 8, 32, 40, 174, 16, 100, 4, 38, 44, 118

Offset

1,2

Comments

Column 3 of A200272

Links

Table of n, a(n) for n=1..30.

Example

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

Crossrefs

Sequence in context: A240119 A292755 A294021 * A273308 A105790 A338895

Adjacent sequences: A200264 A200265 A200266 * A200268 A200269 A200270

Keyword

nonn

Author

R. H. Hardin Nov 15 2011

Status

approved