A200078 Number of 0..4 arrays x(0..n) of n+1 elements with zero n-1st differences

1, 5, 9, 17, 27, 37, 85, 169, 151, 219, 533, 1553, 2333, 4197, 2607, 2419, 6343, 25235, 55337, 113875, 35671

Offset

1,2

Comments

Column 4 of A200082

Links

Table of n, a(n) for n=1..21.

Example

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

Crossrefs

Sequence in context: A100449 A146284 A175543 * A190806 A294774 A192746

Adjacent sequences: A200075 A200076 A200077 * A200079 A200080 A200081

Keyword

nonn

Author

R. H. Hardin Nov 13 2011

Status

approved