A249840 Number of length n+4 0..4 arrays with no five consecutive terms having the maximum of any two terms equal to the minimum of the remaining three terms.

1920, 6916, 25206, 92190, 337396, 1234328, 4527441, 16609691, 60928967, 223459265, 819367574, 3005369679, 11024516408, 40441065859, 148341013705, 544086364806, 1995685513596, 7320321927718, 26851794805419, 98494684671968

Offset

1,1

Comments

Column 4 of A249844

Links

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

Example

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

Crossrefs

Sequence in context: A361347 A077087 A179696 * A061374 A282474 A252140

Adjacent sequences: A249837 A249838 A249839 * A249841 A249842 A249843

Keyword

nonn

Author

R. H. Hardin, Nov 07 2014

Status

approved