A249238 Number of length 5+5 0..n arrays with no six consecutive terms having two times the sum of any two elements equal to the sum of the remaining four

200, 7776, 170928, 1566052, 9746100, 48456384, 196210998, 663198122, 2060761248, 5679826948, 14351728478, 34033003548, 75546626532, 158191562620, 317870501616, 610302878528, 1127612717630, 2019395783066, 3505210636984

Offset

1,1

Comments

Row 5 of A249233

Links

R. H. Hardin, Table of n, a(n) for n = 1..28

Example

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

Crossrefs

Sequence in context: A035747 A219414 A022152 * A230966 A221039 A221502

Adjacent sequences: A249235 A249236 A249237 * A249239 A249240 A249241

Keyword

nonn

Author

R. H. Hardin, Oct 23 2014

Status

approved