A200077 Number of 0..3 arrays x(0..n) of n+1 elements with zero n-1st differences

1, 4, 6, 8, 14, 18, 24, 56, 26, 26, 54, 226, 260, 482, 196, 54, 128, 728, 1226, 4106, 1168, 272, 892, 4798, 1390, 1298, 962, 216, 470, 2104

Offset

1,2

Comments

Column 3 of A200082

Links

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

Example

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

Crossrefs

Sequence in context: A320125 A110974 A173180 * A256137 A116897 A293763

Adjacent sequences: A200074 A200075 A200076 * A200078 A200079 A200080

Keyword

nonn

Author

R. H. Hardin Nov 13 2011

Status

approved