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A254693
Number of length n+4 0..3 arrays with every five consecutive terms having the maximum of some two terms equal to the minimum of the remaining three terms
1
464, 1116, 2764, 6808, 16276, 37204, 87892, 211672, 512684, 1241154, 2987260, 7209620, 17496932, 42616826, 103975836, 253892100, 620762656, 1520766742, 3732847376, 9175497666, 22579411156, 55623783944, 137178824664, 338676930240
OFFSET
1,1
COMMENTS
Column 3 of A254698
FORMULA
Empirical recurrence of order 83 (see link above)
EXAMPLE
Some solutions for n=7
..1....2....1....2....0....3....0....3....1....1....1....3....1....0....3....3
..0....0....3....3....3....1....0....0....2....1....1....0....2....0....1....2
..1....2....0....1....1....0....3....0....0....3....2....0....1....3....2....1
..1....3....1....0....1....0....0....3....1....2....2....0....2....0....1....2
..2....2....1....1....1....0....0....0....2....1....0....0....1....0....0....2
..1....3....2....1....1....0....2....0....1....0....1....2....0....3....3....2
..1....2....1....1....0....0....0....1....1....1....1....2....1....0....1....2
..0....2....0....1....1....3....0....0....1....3....3....0....2....2....1....3
..1....2....1....3....1....1....1....2....3....1....1....0....1....0....1....1
..3....0....1....0....3....0....0....0....0....3....1....0....3....0....2....2
..2....3....1....1....1....0....2....0....3....1....0....0....1....0....3....3
CROSSREFS
Sequence in context: A111697 A116344 A260497 * A247852 A233352 A233120
KEYWORD
nonn
AUTHOR
R. H. Hardin, Feb 05 2015
STATUS
approved