A229011 Number of arrays of median of three adjacent elements of some length n+2 0..7 array, with no adjacent equal elements in the latter.

8, 62, 470, 2666, 13040, 60180, 273124, 1248872, 5780144, 26993340, 126638342, 594901860, 2793932346, 13112533536, 61505348386, 288407464930, 1352248997558, 6340299132898, 29728967922162, 139400729229576, 653670375108782

Offset

1,1

Comments

Column 7 of A229012.

Links

R. H. Hardin, Table of n, a(n) for n = 1..127

Example

Some solutions for n=4
..0....4....2....1....3....3....6....2....3....2....1....5....6....0....6....1
..3....2....5....4....7....3....6....4....5....6....3....5....5....3....7....1
..2....2....3....0....0....1....7....1....5....0....1....4....6....0....2....7
..4....5....7....1....7....4....0....4....6....1....6....4....6....5....2....5

Crossrefs

Sequence in context: A227439 A144143 A284225 * A126628 A085353 A125396

Adjacent sequences: A229008 A229009 A229010 * A229012 A229013 A229014

Keyword

nonn

Author

R. H. Hardin, Sep 10 2013

Status

approved