A250054 Number of length n+6 0..3 arrays with no seven consecutive terms having the maximum of any two terms equal to the minimum of the remaining five terms.

7224, 18966, 50028, 132054, 348066, 915064, 2398187, 6264519, 16780283, 44934437, 120109652, 320204464, 851082289, 2255459974, 5963697251, 15895712873, 42426824580, 113249519695, 302038597433, 804346238604, 2138273636787

Offset

1,1

Comments

Column 3 of A250059.

Links

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

Example

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

Crossrefs

Cf. A250059.

Sequence in context: A236993 A218513 A181259 * A346594 A202402 A206469

Adjacent sequences: A250051 A250052 A250053 * A250055 A250056 A250057

Keyword

nonn

Author

R. H. Hardin, Nov 11 2014

Status

approved