A250086 Number of length 5+5 0..n arrays with every six consecutive terms having the maximum of some two terms equal to the minimum of the remaining four terms

442, 11519, 117828, 706561, 3032302, 10361063, 30011560, 76692849, 177624322, 380016703, 761591084, 1444917201, 2616462070, 4551355783, 7645002704, 12452793505, 19739306442, 30538524991, 46226743444, 68609982305

Offset

1,1

Comments

Row 5 of A250081

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Formula

Empirical: a(n) = (1/63)*n^9 + (121/84)*n^8 + (108/7)*n^7 + (166/3)*n^6 + (469/5)*n^5 + (1199/12)*n^4 + (5753/63)*n^3 + (2659/42)*n^2 + (2146/105)*n + 1

Example

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

Crossrefs

Sequence in context: A094410 A236706 A105922 * A018237 A264270 A098256

Adjacent sequences: A250083 A250084 A250085 * A250087 A250088 A250089

Keyword

nonn

Author

R. H. Hardin, Nov 11 2014

Status

approved